Vegan Zaru Soba ざるそば (gluten free)



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Delicious Vegan Zaru Soba!

Growing up in a part Japanese household, I ate a lot of zaru soba and I’m bringing you a this Vegan Zaru Soba recipe that is also gluten-free! Zaru soba is a classic Japanese dish of cold buckwheat noodles and you enjoy it by dipping it into a sauce. It’s refreshing, light and very simple but surprisingly not vegan or gluten free friendly.

Vegan Zaru Soba Veggiekins

See, buckwheat alone (despite the name containing the word wheat) is actually gluten-free but most buckwheat noodles have added wheat flour as well. The sauce, called mentsuyu (, which is a light soy based sauce, also contains gluten and bonito or fish stock (this is very commonly used in Japanese cooking to add umami and depth to dishes). The good news is I’ve not only veganized the recipe, but have found a way to make it 100% gluten free as well. I couldn’t be more excited to share this recipe with you, and although it’s a simple recipe, it’s near and dear to my heart.

Vegan Zaru Soba Veggiekins

This Vegan Zaru Soba is made with 100% buckwheat noodles, gluten-free sauce ingredients and a vegan fish sauce replacement that nails the flavour on the head.

the details

  • The recipe is vegan, gluten free and oil free. It is best enjoyed on the spot, but can be batch prepared for parties or meals for a family!
  • Making Vegan Zaru Soba takes only about 15 minutes to make in total, making it a wonderful go-to meal for hangry moments or quick lunches.
  • Buckwheat → is a surprising source of protein, but also fiber and vitamins like thiamin and folate. As I mentioned earlier, it is 100% gluten free as an ingredient, despite what you may think! It has a delicious toasty flavour to it, and I absolutely love it.

Vegan Zaru Soba Veggiekins

secrets to success

To ensure your recipe is 100% gluten free, make sure you look for a 100% buckwheat noodle. I used this brand and it’s absolutely delicious! Using an alternative noodle is possible but I wouldn’t recommend it if you want the authentic experience and texture. You can usually find a 100% buckwheat noodle at a Japanese grocery store if there’s one near you, but if not, I’ve linked a brand you can find on Amazon!

Vegan Zaru Soba Veggiekins

If you’d like to opt to leave out the vegan fish sauce, you absolutely can! I’ve included notes in the recipe if you decide to make your own umami stock using dried kombu, soaked and simmered with a small amount of water.

Vegan Zaru Soba Veggiekins

if you like this recipe, try…

If you try this recipe out, tag me on Instagram @veggiekins so I can see your delicious re-creations and for a chance to be featured! As always, I love when you share your reviews in the comments below, and if you make any fun substitutions, let me know how it worked out below too!

This post may contain affiliate links. 

Vegan Zaru Soba ざるそば (gluten free, refined sugar free)

5 from 2 votes
Servings: 2 -3 servings
Prep: 10 minutes
Cook: 10 minutes
A classic Japanese dish made vegan, gluten free and refined sugar free! This Vegan Zaru soba is incredibly easy to make.


  • dry ingredients
  • 8 oz 100% buckwheat noodles or as much as you'd like to serve (I also like this brand)
  • sauce mentsuyu
  • 1/4 cup gluten free soy sauce
  • 1/4 cup mirin I like this brand
  • 1/2 tbsp granulated sugar of choice you can use coconut sugar
  • 1-2 tsp vegan fish sauce I used this brand of vegan fish sauce, but any will do. To make your own, soak a 1 inch x 1 inch piece of dried kombu overnight in 1/4 cup water and then boil it with the soaking water for a few minutes
  • garnish optional
  • scallions thinly sliced
  • black and white sesame seeds
  • thinly sliced nori
  • shichimi japanese 7 spice seasoning


  • Prepare sauce by mixing all ingredients together until smooth. Bring to a quick boil, then refrigerate, or add ice to chill. When ready to enjoy, add iced water to sauce to achieve your desired level of flavour/saltiness if needed.
  • Boil noodles according to package, strain and rinse with cool water once cooked. Separate into little noodle nests to avoid clumping. You may also place on top of ice to keep cold.
  • Add your desired garnish and toppings and enjoy!

Nutrition information is automatically calculated, so should only be used as an approximation.

Did you make this recipe?Tag @veggiekins on Instagram and hashtag it with #veggiekins

About Remy

Hi there, I’m Remy! Welcome to Veggiekins Blog, home to nourishing vegan + gluten-free recipes and tips to live your best balanced and holistic life. I’m a human on a mission to empower you to be well and be kind to your mind, body and soul with the healing power of plants.

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Recipe Rating


  1. I don't know how you managed to make pasta look cute, but your photos are no doubt adorable. These soba noodles look absolutely delish!

    5 stars

  2. I don’t usually rate recipes but I have this saved, have made multiple times, and it’s one of my favorite dishes. So absolutely refreshing, I love to pair it with a vegan bok choy cesar salad!

    5 stars