(https://gmpg.org/xfn/11) How to Make Dashi だしの作り方 • Just One Cookbook (https://www.justonecookbook.com/how-to-make-dashi/) (Just One Cookbook » Feed) (https://www.justonecookbook.com/feed/) (Just One Cookbook » Comments Feed) (https://www.justonecookbook.com/comments/feed/) (Just One Cookbook » How to Make Dashi (Video) だしの作り方 Comments Feed) (https://www.justonecookbook.com/how-to-make-dashi/feed/) (https://www.justonecookbook.com/wp-json/) (JSON) (https://www.justonecookbook.com/wp-json/wp/v2/posts/23485) (RSD) (https://www.justonecookbook.com/xmlrpc.php?rsd) (https://www.justonecookbook.com/?p=23485) (oEmbed (JSON)) (https://www.justonecookbook.com/wp-json/oembed/1.0/embed?url=https%3A%2F%2Fwww.justonecookbook.com%2Fhow-to-make-dashi%2F) (oEmbed (XML)) (https://www.justonecookbook.com/wp-json/oembed/1.0/embed?url=https%3A%2F%2Fwww.justonecookbook.com%2Fhow-to-make-dashi%2F&format=xml) Use of this website is subject to mandatory arbitration and other terms and conditions, select (https://www.justonecookbook.com/agreement-to-arbitrate/) this link to read those agreements. Skip to content Subscribe to the newsletter (https://www.justonecookbook.com/joc-plus/login/) Log in (https://www.justonecookbook.com/joc-plus/joc-plus-membership/) Go ad-free (https://www.justonecookbook.com/) (Just One Cookbook) Close Menu (https://www.justonecookbook.com/categories/recipes/) Recipes Toggle dropdown (https://www.justonecookbook.com/categories/how-to/) How-Tos Toggle dropdown (https://www.justonecookbook.com/categories/pantry/) Pantry Toggle dropdown (https://www.jocgoods.com/) Shop (https://www.justonecookbook.com/categories/travel/) Japan (https://www.justonecookbook.com/about/) About Toggle Search Close Search Search Search (Search) Search (https://www.justonecookbook.com/) Home » (https://www.justonecookbook.com/categories/recipes/) Recipes » (https://www.justonecookbook.com/categories/recipes/soup-stew/) Soups & Stocks » How to Make Dashi (Video) だしの作り方 How to Make Dashi (Video) だしの作り方 20minutes mins 195 Reviews 234 comments Jump to Recipe (https://www.justonecookbook.com/about/namiko-hirasawa-chen/) (Namiko Hirasawa Chen) by (https://www.justonecookbook.com/about/namiko-hirasawa-chen/) Namiko Hirasawa Chen . Updated February 17, 2025 This post may contain affiliate links. Please read my (https://www.justonecookbook.com/privacy-policy/) disclosure policy . Dashi is the basic Japanese soup stock used in many Japanese dishes. Learn how to make Awase Dashi at home with umami-packed ingredients like kombu (dried kelp) and katsuobushi (dried bonito flakes). (Awase Dashi in a measuring cup, and kombu and katsuobushi on a bamboo basket.) Email me this recipe Plus, enjoy weekly doses of recipe inspiration as a bonus! Email(Required) (Email) (Send Recipe) (This iframe contains the logic required to handle Ajax powered Gravity Forms.) When you decide to make Japanese food, you will realize that a lot of recipes require dashi , Japanese soup stock. With this unfamiliar ingredient, you may think Japanese food is hard to replicate at home. On the contrary, dashi is actually the easiest soup stock anyone can make from scratch as it requires only 1-2 ingredients and 20-minute prep time. This post shows you how you can make Awase Dashi using a combination of ingredients. Once you learn the ins and outs of dashi making, you’ll be ready to tackle Japanese cooking with a breeze. Table of Contents What is Dashi? How to Make All-Purpose Basic Dashi Dashi Shortcut + View More − View Less What is Dashi? Dashi (だし, 出汁) is Japanese soup stock that builds the bases for many of your favorite Japanese dishes like (https://www.justonecookbook.com/homemade-miso-soup/) miso soup , (https://www.justonecookbook.com/chawanmushi-savory-steamed-egg-custard/) chawanmushi , (https://www.justonecookbook.com/shio-ramen/) ramen , and (https://www.justonecookbook.com/shabu-shabu/) shabu shabu . It is the essence of authentic Japanese flavor, and it tells the dishes apart if other substitutions are being used in place of the soup stock. And what defines dashi is the use of carefully selected ingredients like kombu, bonito flakes, shiitake mushrooms, and anchovies, and each ingredient is uniquely Japanese. In general, there are five different types of dashi (two are vegan ). Scroll down to see 5 different types or check out my (https://www.justonecookbook.com/how-to-make-dashi-jiru/) Ultimate Dashi Guide . When we say “dashi” in Japan, it usually implies Awase Dashi because it’s the most commonly used stock. Awase Dashi (合わせだし) is made from a combination of kombu (dried kelp) and katsuobushi (dried bonito flakes), and it’s the seafood-based stock. *Awase (合わせ) means “to combine”, “mixed”, or “together.” (Awase Dashi in a measuring cup, and kombu and katsuobushi on a bamboo basket.) How to Make All-Purpose Basic Dashi The First Dashi The base of Awase Dashi is a vegan (Kombu Dashi) (https://www.justonecookbook.com/how-to-make-kombu-dashi-vegetarian-dashi/) Kombu Dashi made from dried kelp. You can cold brew or hot brew kombu to make the dashi. Then you would add dried bonito flakes to the kombu dashi. This makes the stock more enriched. When you make dashi from the spent kombu and katsuobushi, it’s called Ichiban Dashi (一番だし). It’s basically the first pure dashi. The Second Dashi Niban Dashi (二番だし), or the second dashi is made from the spent kombu and katsuobushi, which you reserved from making Ichiban Dashi. Niban Dashi is a lighter, less intense dashi, yet still provides a great umami flavor despite the previously used ingredients. (Homemade Japanese rice seasoning, Furikake, in a Japanese blue and white ceramic bowl.) Do we really need to make dashi twice? At a regular household, we make such a small amount of dashi that it’s not very efficient to make both Ichiban Dashi and Niban Dashi. My suggestion is to make very good Ichiban Dashi and utilize the used kombu and katsuobushi to make (https://www.justonecookbook.com/homemade-furikake-rice-seasoning/) Homemade Furikake (rice seasoning) and (https://www.justonecookbook.com/simmered-kombu-tsukudani/) Kombu Tsukudani (simmered kombu) after collecting enough used kombu and katsuobushi. This way, there will be no waste, and you get another side dish to accompany your meal. So then who makes Niban Dashi? Japanese restaurants make a huge batch of dashi daily. They use Ichiban Dashi for dishes like (https://www.justonecookbook.com/matsutake-clear-soup/) Clear Soups (Osumashi おすまし) and (https://www.justonecookbook.com/chawanmushi-savory-steamed-egg-custard/) Chawanmushi , which require the pure and maximum amount of umami from the dashi ingredients. They typically use Niban Dashi for (https://www.justonecookbook.com/?s=nimono) simmered food (Nimono ) and (https://www.justonecookbook.com/?s=miso+soup) miso soup , which doesn’t require much flavor from the soup stock. Dashi Shortcut Sometimes life happens and you just don’t have 20 minutes to make dashi from scratch. On those occasions, you can use (https://www.justonecookbook.com/dashi-packet/) Dashi Packet or (https://www.justonecookbook.com/dashi-powder/) Dashi Powder . (Dashi Shortcut | Easy Japanese Recipes at JustOneCookbook.com) I love using Kayanoya Dashi Packet (left) and Shimaya Dashi Powder (right), which are made without artificial additives. You can purchase them at Japanese grocery stores or on Amazon: (https://amzn.to/4ljN7Pd) Kayanoya Dashi Packet (https://amzn.to/2XTKzMh) Shimaya Dashi Powder The instructions (recipes) for how to use them can be found in the (https://www.justonecookbook.com/dashi-packet/) Dashi Packet post and (https://www.justonecookbook.com/dashi-powder/) Dashi Powder post. (4 wooden miso soup bowls containing different types of miso soup.) Easy & Delicious Recipes Using Dashi (https://www.justonecookbook.com/homemade-miso-soup/) Homemade Miso Soup (https://www.justonecookbook.com/spicy-shoyu-ramen/) Spicy Shoyu Ramen (https://www.justonecookbook.com/agedashi-tofu-2/) Agedashi Tofu (https://www.justonecookbook.com/favorite-japanese-hot-pots-soups-stews/) Japanese Hot Pots and Stews (5 different types of dashi in a jar and their ingredients.) The Ultimate Dashi Guide Dashi plays an important role as a flavor enhancer in Japanese cooking, so you don’t need to season the food with too much salt, fat, and sugar. Rich in minerals and other vitamins, dashi is considered a healthy ingredient in our daily diet. There are six different types of dashi you can use in Japanese cooking, including vegetarian and vegan dashi (*). (https://www.justonecookbook.com/how-to-make-kombu-dashi-vegetarian-dashi/) (https://www.justonecookbook.com/how-to-make-dashi/) Awase Dashi – a stock made from a combination of dried kelp + bonito flakes (https://www.justonecookbook.com/how-to-make-kombu-dashi-vegetarian-dashi/) (https://www.justonecookbook.com/how-to-make-kombu-dashi-vegetarian-dashi/) Kombu Dashi * – a stock made from dried kelp (https://www.justonecookbook.com/katsuo-dashi-bonito-stock/) Katsuo Dashi – a stock made from dried bonito flakes (https://www.justonecookbook.com/iriko-dashi-anchovy-stock/) Iriko Dashi – a stock made from dried anchovies/sardines (https://www.justonecookbook.com/shiitake-dashi/) Shiitake Dashi * – a stock made from dried shiitake mushrooms (https://www.justonecookbook.com/vegan-shiitake-kombu-dashi/) Vegan Dashi * – a stock made from dried shiitake mushrooms and kombu If you are new to different types of dashi, check out my (https://www.justonecookbook.com/how-to-make-dashi-jiru/) Ultimate Dashi Guide . Wish to learn more about Japanese cooking? Sign up for ourfree (https://www.justonecookbook.com/subscribe/) newsletter to receive cooking tips & recipe updates! And stay in touch with me on (https://www.facebook.com/justonecookbook) Facebook , (https://www.pinterest.com/justonecookbook/) Pinterest , (https://www.youtube.com/user/justonecookbook?sub_confirmation=1) YouTube , and (https://www.instagram.com/justonecookbook/) Instagram . (Awase Dashi in a measuring cup, and kombu and katsuobushi on a bamboo basket.) (https://www.justonecookbook.com/joc-plus/recipe-collections/) Save (https://www.justonecookbook.com/joc-plus/recipe-collections/) Saved (https://www.pinterest.com/pin/create/bookmarklet/?url=https%3A%2F%2Fwww.justonecookbook.com%2Fhow-to-make-dashi%2F&media=https%3A%2F%2Fwww.justonecookbook.com%2Fwp-content%2Fuploads%2F2019%2F04%2FAwase-Dashi-I.jpg&description=Awase+Dashi+%28Japanese+Soup+Stock%29&is_video=false) Pin (https://www.justonecookbook.com/wprm_print/awase-dashi-japanese-soup-stock) Print 4.65 from 195 votes Awase Dashi (Japanese Soup Stock) by (https://www.justonecookbook.com/about/namiko-hirasawa-chen/) Namiko Hirasawa Chen Dashi is the basic Japanese soup stock used in many Japanese dishes. Learn how to make Awase Dashi at home with umami-packed ingredients like kombu (kelp) and katsuobushi (bonito flakes). Prep: 5minutes mins Cook: 15minutes mins Total: 20minutes mins Servings: 1 batch (3⅓ cups, 800 ml) Email me this recipe Plus, enjoy weekly doses of recipe inspiration as a bonus! Email(Required) (Email) (Send Recipe) (This iframe contains the logic required to handle Ajax powered Gravity Forms.) (How to Make (Awase) Dashi (Recipe) 合わせだしの作り方 (レシピ)) Cook Mode Prevent your screen from going dark Ingredients US Customary Metric 1x 2x 3x 1 piece (https://www.justonecookbook.com/kombu/) kombu (dried kelp) (10 g; 4 x 4 inches, 10 x 10 cm per piece) 1 cup (https://www.justonecookbook.com/dried-bonito-flakes-katsuobushi/) katsuobushi (dried bonito flakes) (packed; 10 g) 4 cups water Instructions Before You Start… Sometimes life happens and you just don‘t have 20 minutes to make dashi from scratch. On those occasions, you can use a (https://www.justonecookbook.com/dashi-packet/) Dashi Packet or (https://www.justonecookbook.com/dashi-powder/) Dashi Powder . (Dashi made from Dashi Packet.) Gather all the ingredients. Most Japanese recipes would say to gently clean the kombu with a damp cloth. However, these days, kombu is quite clean, so just make sure it doesn't have any mold spots and it‘s ready to use. Do not wash or wipe off the white powdery substance, as it has lots of umami. (Awase Dashi Ingredients) Make several slits in 1 piece kombu (dried kelp) to release more flavor. (Awase Dashi 1) To Make the Cold Brew Kombu Dashi Ahead of Time (Optional) Put 4 cups water and the kombu in a large bottle and let it steep on the counter for 2–3 hours in the summertime and 4–5 hours in the wintertime. You can also cold brew the kombu dashi overnight in the refrigerator. (Awase Dashi 2) To Make the Awase Dashi Add the kombu and water to a medium saucepan. If you have cold brew Kombu Dashi (previous step), add the Kombu Dashi and hydrated kombu to the saucepan. (Awase Dashi 3) Turn on the heat to medium low and slowly bring to almost boiling , about 10 minutes. (Awase Dashi 4) Meanwhile, clean the dashi by skimming the foam and debris from the surface. (Awase Dashi 5) Just before the dashi starts boiling gently, remove the kombu from the saucepan (discard or repurpose in other recipes—suggestions follow). If you leave the kombu in the saucepan, the dashi will become slimy and bitter. (Awase Dashi 6) Add 1 cup katsuobushi (dried bonito flakes) and bring it back to a boil again. (Awase Dashi 7) Once the dashi is boiling, reduce the heat, simmer for just 30 seconds, and turn off the heat. (Awase Dashi 8) Let the katsuobushi sink to the bottom, about 10 minutes. (Awase Dashi 9) Strain the dashi through a fine-mesh sieve over a bowl or measuring cup. Reserve the katsuobushi and repurpose it; see the suggested recipes that follow. The Awase Dashi is ready to use. (Awase Dashi 10) To Store If you are not using the dashi right away, store the dashi in a bottle or mason jar and keep it in the refrigerator for 3–5 days or in the freezer for 2 weeks. (Awase Dashi in a measuring cup, and kombu and katsuobushi on a bamboo basket.) What to do with the spent katsuobushi and kombu? Save the spent kombu and katsuobushi in an airtight container and store it in the refrigerator for a week or in the freezer for up to a month. (Furikake Spent Kombu and Katsuobushi) With the spent kombu, you can make (https://www.justonecookbook.com/simmered-kombu-tsukudani/) Simmered Kombu (Kombu Tsukudani) . (Simmered kombu in a small dish next to a bowl of steamed rice.) You can also make (https://www.justonecookbook.com/homemade-furikake-rice-seasoning/) Homemade Furikake (Rice Seasoning) . (A rice bowl containing steamed rice sprinkled with furikake rice seasoning.) Optional: Niban (Second) Dashi In a medium saucepan, put 2–4 cups* of water and previously used kombu and katsuobushi from making the first dashi. Bring it to a boil over medium-low heat. *2 cups would make a stronger dashi. Remove the kombu just before the liquid comes to a boil, then lower the heat, and cook for 10 minutes, skimming occasionally. Add an additional ½ cup (5 grams) of fresh katsuobushi and turn off the heat. Let the katsuobushi sink to the bottom and strain the dashi through the fine-mesh sieve. Nutrition Serving: 1 batch , Calories: 5 kcal , Carbohydrates: 1 g , Protein: 1 g , Sodium: 42 mg , Potassium: 32 mg , Fiber: 1 g , Sugar: 1 g , Calcium: 138 mg , Iron: 1 mg Did you make this recipe? Tag (https://www.instagram.com/justonecookbook/) @justonecookbook on Instagram so we can see your delicious creation! Editor’s Note: This post was originally published in January 2013. The images and content have been updated in April 2019. Related Posts (Japanese Kombu Types) (https://www.justonecookbook.com/kombu/) Kombu (Katsuobushi (Dried Bonito Flakes) | Easy Japanese Recipes at JustOneCookbook.com) (https://www.justonecookbook.com/dried-bonito-flakes-katsuobushi/) Katsuobushi (Dried Bonito Flakes) (How To Make Dashi 3 Ways | Easy Japanese Recipes at JustOneCookbook.com) (https://www.justonecookbook.com/how-to-make-dashi-3-ways/) 3 Ways To Make Dashi (Video) 18 19minutes minutes (A rice bowl containing steamed rice sprinkled with furikake rice seasoning.) (https://www.justonecookbook.com/homemade-furikake-rice-seasoning/) Furikake (Japanese Rice Seasoning) ふりかけ 226 15minutes minutes (https://www.justonecookbook.com/about/namiko-hirasawa-chen/) About Namiko Hirasawa Chen Born and raised in Japan, I’m the founder and recipe developer behind Just One Cookbook, the largest English-language website for authentic Japanese recipes. Since 2011, I’ve shared over 1,200 easy, foolproof recipes with step-by-step photos to help you cook delicious Japanese meals with confidence at home. (https://www.justonecookbook.com/about/namiko-hirasawa-chen/) More (https://www.facebook.com/justonecookbook/) Facebook (https://www.instagram.com/justonecookbook/) Instagram (https://www.pinterest.com/justonecookbook/) Pinterest (https://www.youtube.com/user/justonecookbook) YouTube Leave a Comment Cancel reply We’d love to hear from you! Please leave a star rating and share your experience—whether it’s your thoughts on the recipe or any tips you’d like to share. Let’s keep it kind and positive! Your email address will not be published. Required fields are marked * Recipe rating Recipe rating (0) (1) (2) (3) (4) (5) Comment * Name * Email * (Add Comment) 4.65 from 195 votes (161 ratings without comment ) 234 Comments Lisa Can I substitute dried shrimps for the bonito flakes? (March 14, 2025) March 14, 2025 Reply Naomi (JOC Community Manager) Hi Lisa! Thank you for trying Nami’s recipe.For Japanese dishes, shrimp may have a flavor that is too strong. If you are looking for a substitute, we recommend using shiitake mushrooms, kombu, or niboshi. You can learn more about these ingredients here:(https://www.justonecookbook.com/dried-bonito-flakes-katsuobushi/) https://www.justonecookbook.com/dried-bonito-flakes-katsuobushi/ (https://www.justonecookbook.com/iriko-niboshi/) https://www.justonecookbook.com/iriko-niboshi/ Hope this helps! (March 18, 2025) March 18, 2025 Reply Agnieszka Hello, Nami-san! I love your recipes! 🤩🤩 I want to introduce japanese cuisine to one of our friends, it’s a bit of a challenge though, because she is severely allergic to anything sea-related (seafood, fish AND seaweed). Can you suggest any acceptable alternative for dashi? Most of our favorite recipes includes it and I’m trying to work my way around it and still taste Japanese-like 😅 (February 21, 2025) February 21, 2025 Reply Naomi (JOC Community Manager) Hi, Agnieszka! Thank you for introducing Japanese food to your friends! 🥰Dashi can be made with Shiitake mushrooms, and we hope it works out well for your friend. Here is the link to the recipe.(https://www.justonecookbook.com/shiitake-dashi/) https://www.justonecookbook.com/shiitake-dashi/ Enjoy cooking! (February 24, 2025) February 24, 2025 Reply Faye Hey dear JOC-team, I made awase-dashi alot of times, exactly as described in your recipe. For me, the katsuo are way too dominant, very fishy, which I dislike. So I got used to made the kombu + shiitake dashi. Now a friend of mine bought me instant (katsuo+kombu) dashi (Dashi no Moto, Shimaya), which is, surprisingly, very delicious. It has the perfect balance of katsuo and kombu. Also I noticed, that it coniains salt. So, what can I do, to reproduce the taste of this instant dashi? Less katsuo? Add salt (which I never read on any homemade dashi-recipe)? Maybe you have a clue for me, why my dashi tastes so fishy. Thank you in advance! :3 (February 20, 2025) February 20, 2025 Reply Naomi (JOC Community Manager) Hi, Faye! The fishy taste could be due to the Katsuobushi you used.This post covers several varieties. You can also lessen the amount if that suits your preferences.(https://www.justonecookbook.com/dried-bonito-flakes-katsuobushi/) https://www.justonecookbook.com/dried-bonito-flakes-katsuobushi/ We hope this information helps!🤗 (February 21, 2025) February 21, 2025 Reply Faye Thank you Naomi! I tried the Kombu + Shiitake dashi (cold over night, then almost boil) and boiled it with a just a little katsuo (3 g) at the very end. Now it has a full umami and a light fish taste. Great! Thank you! (February 21, 2025) February 21, 2025 Reply Naomi (JOC Community Manager) Hello, Faye. I’m delighted you’ve discovered the perfect Dashi balance for your taste! 🥰 Thank you for sharing your experiences! (February 24, 2025) February 24, 2025 Reply Bibi Hello Nami ^^I always follow your recipes in the darkWe did with my fiancé homemade oden last night 🙂My question was how to make more stronger dashi ?I used kombu and katsuobushi and follow for make the oden broth however is was blank taste or let’s say very light.I did a brew left over night specially for the oden 🍢 (October 28, 2024) October 28, 2024 Reply Naomi (JOC Community Manager) Hello, Bibi! Thank you very much for trying Nami’s recipes.If you prefer a stronger Dashi, we recommend increasing the amount of Kombu and Katsuobushi when making it. It will bring out more flavor in the Dashi.We hope this helps! 🤗 (October 29, 2024) October 29, 2024 Reply Joan Holt Hi NamikoMy kombu weighs half than yours for a 10x10cm piece. Should I go by weight or measured piece?Joan (September 13, 2024) September 13, 2024 Reply Naomi (JOC Community Manager) Hello, Joan. Thank you for trying Nami’s recipe.We recommend using weight measurements. However, different varieties of Kombu have slightly different flavors. Please feel free to alter the amount of Kombu to your preference.Here is a post about Kombu: (https://www.justonecookbook.com/kombu/) https://www.justonecookbook.com/kombu/ We hope this helped! (September 14, 2024) September 14, 2024 Reply Tsogt-Erdene Is there katsuobushi flakes available in Mongolia? I appreciate if you respond thanks. (5 stars) (June 13, 2024) June 13, 2024 Reply Naomi (JOC Community Manager) Hello there! Thank you for reading Nami’s post.You can find Katsuobushi in your local Asian or Japanese market, or you can purchase it from online stores.(https://www.justonecookbook.com/online-shops-for-asian-ingredients-goods/) https://www.justonecookbook.com/online-shops-for-asian-ingredients-goods/ We hope this information is helpful! (June 15, 2024) June 15, 2024 Reply Chris thank you for such a wonderful and informative website! i LOVE japanese food and i’m grateful to you for helping me become proficient (or at least passable) a making it at home! if i reduce this, say by half, would it make a good concentrate for making dashi broth? i’m thinking about doing so and freezing them into cubes for making “instant” ramen later on.(5 stars) (April 29, 2024) April 29, 2024 Reply Naomi (JOC Community Manager) Hi, Chris! Thank you for reading Nami’s post and for your kind feedback!You may add more ingredients to the original amount of water to make concentrate Dashi. You can add up to 80 g of Katsuobushi every 4 cups. Please feel free to adjust the amount to your liking. We hope this helped! (April 30, 2024) April 30, 2024 Reply Riza Hello! How many nights can you store Kombu in the fridge to soak? Is it best to use it immediately the next day?(5 stars) (October 27, 2023) October 27, 2023 Reply Naomi (JOC Community Manager) Hello, Riza! The cold brew can be left for up to 12 hours. After 12 hours, the Kombu starts releasing too much alginic acid into the Dashi, resulting in slimy Dashi.More information about storing Kombu dashi can be found here.(https://www.justonecookbook.com/how-to-make-kombu-dashi-vegetarian-dashi/) https://www.justonecookbook.com/how-to-make-kombu-dashi-vegetarian-dashi/ We hope this was helpful! (October 30, 2023) October 30, 2023 Reply Mel Hello, Should i let the kombu and katsuobushi from the dashi fully dry before storing in the fridge? Thank you!(5 stars) (October 23, 2023) October 23, 2023 Reply Naomi (JOC Community Manager) Hi Mel! You don’t have to completely dry them, but you can squeeze out the dashi.We recommend that you use them as soon as possible.Happy Cooking! (October 24, 2023) October 24, 2023 Reply Teresa Can I make cold brew 2nd dashi (using previously boiled kombu)? (October 5, 2023) October 5, 2023 Reply Naomi (JOC Community Manager) Hello, Teresa. Thank you for taking the time to read Nami’s message.We recommend not brewing the cold brew (2nd Daashi) after the Kombu has boiled. Instead, simmer it for 10 minutes to produce a second dashi with boiled Kombu. However, the flavor will be weakened, and you may want to add more dashi ingredients like Shiitake or Katsuobushi.We hope this helps! (October 7, 2023) October 7, 2023 Reply Olivia Hi Nami! Recently I’ve been making bone broth in my Instant Pot using the slow cooker function – it’s very good for collagen! I have been adding instant awake dashi packs to it to make miso soup, and the umami from the beef bones pairs really well. I was wondering if I could implement the traditional dashi recipe to the bone broth. Do i add the kombu as it’s slow cooking and the katsuoboshi when it’s done? Or do I add ready-made dashi to the slow cooker with the beef bones? Thank you(5 stars) (October 1, 2023) October 1, 2023 Reply Namiko Hirasawa Chen Hi Olivia! Oh, my family love oxtail broth with katsuo dashi ((https://www.justonecookbook.com/oxtail-udon/) https://www.justonecookbook.com/oxtail-udon/ ). Kombu release umami slowly, but the temperature should not be high, that’s why you’re supposed to take it out before boiling. I forgot the exact temperature, but it’s like 80-90C range at max to get the best umami out of it. So you can start with cold brew, then heat it up until that temp. I don’t recommend slow cooking. If you’re going to strain your broth, adding the katsuobushi at the end makes sense, but don’t cook it as it gets bitter. For me, it’s much easier to make the broth separately and combine the two (so you can create a good ratio eventually). 🙂 (October 1, 2023) October 1, 2023 Reply (https://www.justonecookbook.com/how-to-make-dashi/comment-page-6/#comments) Load More (Namiko Hirasawa Chen) Easy Japanese Recipes for Everyday Home Cooking Konnichiwa, I’m Nami. Born and raised in Japan, I’m the founder and recipe creator behind Just One Cookbook, the largest English-language website for Japanese recipes. Since 2011, I’ve tested and shared 1,200 authentic, easy-to-follow recipes with step-by-step photos to help anyone cook delicious Japanese food at home. (https://www.justonecookbook.com/about/namiko-hirasawa-chen/) More (https://www.facebook.com/justonecookbook) Facebook (https://instagram.com/justonecookbook/) Instagram (https://www.pinterest.com/justonecookbook/) Pinterest (https://www.youtube.com/user/justonecookbook?sub_confirmation=1) YouTube Weeknight Dinners (A white ceramic plate containing Okonomiyaki, a savory Japanese cabbage pancake topped with okonomi sauce, Kewpie mayo, and bonito flakes.) (https://www.justonecookbook.com/okonomiyaki/) Okonomiyaki Recipe (Video) お好み焼き (A plate with a hamburger steak topped with brown mushroom gravy, a sunny-side-up egg, white rice, and garnished with parsley. A yellow napkin and a drink are in the background.) (https://www.justonecookbook.com/loco-moco/) Loco Moco (Video) ロコモコ (https://www.justonecookbook.com/everyday/weeknight-dinner/) More As Seen On Popular Categories (https://www.justonecookbook.com/everyday/bento/) Bento (https://www.justonecookbook.com/categories/recipes/dessert/) Desserts (https://www.justonecookbook.com/categories/recipes/entree/) Dinner (https://www.justonecookbook.com/diet/healthy/) Healthy-ish (https://www.justonecookbook.com/categories/recipes/lunch/) Lunch (https://www.justonecookbook.com/collection/party-food/) Party Food (https://www.justonecookbook.com/everyday/quick-and-easy/) Quick & Easy (https://www.justonecookbook.com/diet/vegetarian/) Vegetarian (https://www.justonecookbook.com/everyday/weeknight-dinner/) Weeknight Meals Popular Guides (https://www.justonecookbook.com/how-to-make-bento/) Bento Guide (https://www.justonecookbook.com/how-to-make-dashi-jiru/) Dashi Guide (https://www.justonecookbook.com/ultimate-sushi-guide/) Sushi Guide (https://www.justonecookbook.com/japanese-ramen-guide/) Ramen Guide (https://www.justonecookbook.com/tsukemono-guide-to-japanese-pickles/) Tsukemono Guide (https://www.justonecookbook.com/wagashi-history-japanese-confectioneries/) Wagashi Guide (https://www.justonecookbook.com/nabemono-japanese-hot-pot/) Japanese Hot Pot Guide (https://www.justonecookbook.com/japanese-cutting-techniques/) Japanese Cutting Technique Guide About JOC (https://www.justonecookbook.com/about/) About Us (https://www.justonecookbook.com/about/namiko-hirasawa-chen/) About Namiko Chen (https://www.justonecookbook.com/about/media-mentions/) Media Mentions (https://www.justonecookbook.com/cookbooks/) Cookbooks (https://www.justonecookbook.com/joc-plus/joc-plus-membership/) JOC PLUS Membership (https://www.jocgoods.com/) JOC Goods (https://www.justonecookbook.com/ultimate-travel-guide-to-tokyo/) JOC Japan Travel (https://www.justonecookbook.com/contact/) Contact Us Subscribe to the Newsletter Join 110K others and subscribe to my free email list. You’ll get every new recipe and weekly newsletter, plus Japanese cooking tips and special Nami updates. You can unsubscribe at any time. Subscribe Connect with Us (https://www.facebook.com/justonecookbook) Facebook (https://instagram.com/justonecookbook/) Instagram (https://www.pinterest.com/justonecookbook/) Pinterest (https://www.youtube.com/user/justonecookbook?sub_confirmation=1) YouTube (https://www.justonecookbook.com/about/) About (https://www.justonecookbook.com/privacy-policy/) Privacy Policy (https://www.justonecookbook.com/terms-and-conditions/) Terms (https://www.justonecookbook.com/website-accessibility/) Accessibility (https://www.justonecookbook.com/content-permissions/) Permissions (https://www.justonecookbook.com/contact/) Contact © 2025 Just One Cookbook. All rights reserved. (https://www.cre8d-design.com/) Site by cre8d Notifications