Zaru Soba (Cold Soba Noodles)

Jump to Recipe

Refreshingly cold and served with a light and tasty sauce, Zaru soba is the perfect go-to noodle dish for summer. It’s delicious, healthy, and so easy to make. You can bring the taste of traditional Japan into your home with this quick and easy dish.

Cold soba noodles served on a bamboo strainer topped with shredded nori seaweed

What is Zaru Soba?

Zaru soba is cold noodles made from buckwheat flour, boiled and cooled under running water and then served on a bamboo strainer (called Zaru in Japanese). This cold soba noodle dish is served with dipping sauce called “mentsuyu”.

cold soba noodles served on a bamboo strainer with a bowl of dipping sauce, and condiments.

Why you will Love Cold Soba Noodles

Refreshing noodle dish, great lunch for hot summer
Soba noodle has lower GI of 46
Easy and quick to make

2 servings of dried soba noodle on a bamboo tray

Ingredients

Soba Noodles (dry or frozen) – You can buy this from Japanese grocery stores, Supermarkets, Health products shops, and online.
Dipping sauce (Mentsuyu) – you can purchase bottled dipping sauce from Japanese grocery stores or online stores, but also you can make dipping sauce for cold soba noodles easily at home if you stock Japanese sauces and condiments in your cupboard. You will need Katsuo (bonito flake), kombu kelp, soy sauce, and mirin.
Condiments (yakumi) – Yakumi, such as green onions, ginger, myoga (Japanese ginger) and wasabi, add and enhance the simple cold noodle dish flavour.
Shredded nori seaweed for topping

shredded nori seaweed, shichimi togarashi, tenkasu, myoga, and finely chopped scallions in small bowls

How To Make it?

At the soba noodle speciality shops in Japan, you can eat soba noodles that are freshly made and boiled, but it is difficult to have such luxury. Especially since the majority of my readers are living outside of Japan. Don’t despair, there is a way to bring out the delicious taste of fresh Soba noodles with dried noodles. The difference between freshly made and dried is the amount of moisture. So before you cook it, soak the dried noodles in water and let the noodles absorb the moisture. Read more about Soba noodles that I explained in detail in the soba noodles post here.

4 photo collage showing the process of cooking soba noodles

Tips & Tricks

  • Soak the dried soba noodles in water for 15 minutes before cooking the noodles
  • Use a large pot to cook with plenty of water
  • Cook in shorter time because the dried noodles are already pre-soaked in water.
  • Wash the cooked noodle immediately under running water to remove sliminess.
  • Accompany with condiments that have fragrance and refreshing flavour
rinsing cooked soba noodles under running water

How to Serve Cold Soba Noodles?

If you have a bamboo strainer like in the photos, rinse the soba noodles under running water and drain the water and serve them on the bamboo strainer. Top with shredded nori seaweed and accompany mentsuyu and your choice of condiments. I usually eat cold soba noodles with grated ginger, chopped scallions, shiso leaves and myoga if I have. Oh, and tenkasu (the byproduct of tempura). Also you can serve soba noodles with Tempura, which is called Ten-zaru-soba.

cold soba noodles served on a bamboo strainer and a pair of chopsticks holding soba noodles out dipping into a small bowl of sauce

FAQ

Q: Do you drink cold soba broth?

A: Cold soba is eaten with dipping sauce in a small bowl, called soba-choko. I don’t drink the dipping sauce,. I throw it away once used, though leftover that has not been used can be used for different recipes such as making seasoned rice.

cold soba noodle dipped into a small cup of mentsuyu sauce

More Japanese Noodle Recipes

Toshikoshi soba served in a noodle bowl

Stay Connected

If you like the recipe please rate the recipe and leave comments below. Also don’t forget to follow me on Youtube, Pinterest, Facebook, Twitter and Instagram. This way you keep up to date with all the latest happenings on Chopstick Chronicles. Don’t forget to Sign up for a weekly newsletter so you never miss out on new authentic delicious Japanese recipes!

Recipe Notes

Cold soba noodles served on a bamboo strainer topped with shredded nori seaweed

Cold Soba Noodles ざる蕎麦

4.67 from 3 votes
Refreshing cold soba is the perfect go-to noodle dish for summer. It's delicious, healthy, and so easy to make. The step by step recipe, tips
Prep Time 15 minutes
Cook Time 3 minutes
Total Time 18 minutes
Servings: 1

Equipment

Ingredients

  • 1 serving dried soba noodle
  • 12 cups water for boiling
  • 1 tbsp vegetable oil *1

Mentsuyu dipping sauce

  • 1 cup water
  • 1 piece Kombu kelp *about 2 inch(5cm)
  • 1 cup Bonito flake (Katsuobushi) *10g
  • 3 tbsp Mirin *2
  • 3 tbsp soy sauce *3

Condiments suggestions

  • 1 tbsp shredded nori seaweed
  • 1 tbsp finely chopped scallions
  • 1 tbsp Tenkasu *4
  • 1 tbsp finely sliced myoga
  • 1/2 tbsp grated ginger

Instructions

  • Place soba noodle in a shallow container and add enough water (not listed in ingredients) to just cover the noodles for 15 minutes.
  • While the noodle is being soaked in water, start to boil 12 cups of water in a large pot over high heat.
  • Also make the dipping sauce at this point following the instructions below.
  • Add the vegetable oil into the pot.
  • Remove the noodles from the soaking water and put them into the boiling water in the large pot.
  • Cook the noodles for 3 minutes.
  • Turn the heat off and drain the cooking water.
  • Wash the cooked noodle under running water.
  • Drain the water, remove excess water and serve the soba noodle on a bamboo strainer.
  • Top with shredded nori seaweed and serve with a cup of mentsuyu dipping sauce and your choice of condiments.

Make Dipping Sauce Mentsuyu

  • Place the water and kombu kelp in a small saucepan over high heat to bring it to boil.
  • Add the bonito to the saucepan and turn the heat off.
  • Drain the dashi stock and add mirin and soy sauce.

Notes

*1 I used olive oil.
*2 See learn about more Mirin
*3 Read more about soy sauce
*4 Tenkasu is byproduct of Tempura. You can buy commercially made this in package. See the link in the above post. 

Nutrition

Calories: 422kcal · Carbohydrates: 67g · Protein: 14g · Fat: 15g · Saturated Fat: 12g · Sodium: 3857mg · Potassium: 289mg · Fiber: 1g · Sugar: 13g · Vitamin A: 63IU · Vitamin C: 1mg · Calcium: 39mg · Iron: 3mg
Course: Lunch, Main Dish
Cuisine: Japanese
Did You Make This Recipe?I want to see it! Tag @chopstickchronicles on social media!

Chopstick Chronicles is a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for sites to earn advertising fees by advertising and linking to Amazon.com. As an amazon associate I earn from qualifying purchases.

Shihoko Ura of Chopstick Chronicles
About The Author

Shihoko Ura

Shihoko Ura is a Japanese home cook and cookbook author with a passion for food and photography. She shares her authentic and beloved recipes with step-by-step guides and helpful tips so you too can make delicious Japanese food at home. Her recipes have featured in The Japan Times, Buzzfeed, and Country Living.

Read More

Readers’ Favorite Japanese Recipes

4.67 from 3 votes (1 rating without comment)

Join The Discussion

Your email address will not be published. Required fields are marked *

Recipe Rating




This site uses Akismet to reduce spam. Learn how your comment data is processed.

Questions and Reviews