10-Minute Zaru Soba (Cold Soba Noodles)

This quick & easy zaru soba recipe features cold soba noodles dipped in an ultra-flavorful Tsuyu sauce made with only 4 simple ingredients from your pantry! This light and refreshing meal takes just a few minutes to prepare, and truly the ultimate way to cool down on a hot summer day. 

What is Zaru Soba?

Zaru Soba is easily one of my favorite meals to have in the summertime as they are simple to prepare, healthy, and best of all, loaded with incredible umami flavors to complement the ice-cold noodles.

This soba recipe is third on the cold noodle series I am sharing with you to enjoy on a hot summer day and one that I make the most often due to its alluring flavors and easy prep.

Soba noodles are known to be healthier than other alternatives as it is made with a base of buckwheat flour, resulting in fewer calories and more nutrients such as Vitamin B, various minerals, and fiber.

It’s also gluten-free and tastes incredible with a nutty flavor and a wholesome texture.

If you’ve been following my blog awhile you’d know that my obsession with noodles is indisputable, and this is a great way to satisfy that noodle craving without taking on the extra calories.

Although there are many different ways to prepare cold soba noodles, the dish that I am sharing with you today is known as Zaru Soba (ざるそば) in Japan.

This is the most classic way to serve soba noodles in dipping them in a rich and flavorful Mentsuyu sauce, which can be put together in minutes using this easy recipe.

Although Mentusyu is traditionally made with homemade dashi stock and a long list of ingredients, we will be simplifying the process today as usual but without any compromise to the taste.

Best of all, the soba dipping sauce is good for up to 2 weeks in the fridge, making it the ultimate make-ahead meal to enjoy during the summertime.

What do I need to make Zaru Soba?

This easy soba recipe calls for a seamless two-step preparation of cooking the noodles and making the dipping sauce. Here is everything you’ll need to make this delicious summer meal:

• Soba noodles: to be cooked, chilled and served alongside your Tsuyu sauce. These noodles are sold pre-portioned and only take 3-4 minutes to cook in boiling water, to be strained and rinsed under ice-cold water prior to serving.
• Dashi: for the base stock. This is the backbone of many Japanese dishes, and can be prepared easily with instant soup stock, which works in a similar fashion as chicken bouillon powder. 
  • To prepare your dashi, simply mix the powder into water and it’s ready to go! For 1 cup of water, you will need to mix in about 1/2 tsp of dashi powder. 
  • Please feel free to use homemade stock as well if you prefer, but this method is a true life-saver for the busy days, without compromising the flavor.
  • Another alternative is to use low-sodium chicken stock, or a 2:1 ratio of regular chicken stock and water. To prepare for this recipe, you’ll need to mix 2/3 cup of chicken stock with 1/3 cup water.
• Soy sauce, mirin, and sugar: to season the dipping sauce. 

How do I serve Zaru Soba?

There are many different ways to serve Zaru Soba, but my favorite way is to garnish the noodles with some shredded nori, microgreens, and sesame seeds.

You can also dress your sauce with minced daikon, quail egg yolk, and a large handful of chopped green onion if you prefer.

Here is a list of popular toppings that you can add to your tsuyu dipping sauce:

• Chopped green onions: or scallions.
• Shredded nori: you can purchase pre-shredded nori, or use a pair of scissors to snip them into silvers.
• Wasabi: fresh or store-bought will both work.
• Grated daikon or ginger: shaved in a fine grater and squeezed of excess liquid
• Egg yolk or poached egg: quail or regular-sized
• Tempura: vegetable or shrimp

The best way to serve these soba noodles for a crowd is to serve the noodles and dipping sauce individually, and have the variety of toppings centered at the table for guests to dress their sauce to their liking!

Zaru Soba is quick & easy to prepare and makes for a fun activity for your loved ones to enjoy together, which makes it a popular choice for a shared meal during the summertime.

I hope you enjoy this easy and delicious soba recipe, and please feel free to leave a comment below or message me on Instagram with any questions. Happy cooking everyone!

Other easy dinner recipes you may like:

• Yaki Udon (Stir Fried Udon Noodles)
• Melt-In-Your-Mouth Japanese Hamburger Steak
• Chicken Katsu (Japanese Chicken Cutlet)
• Bibim Guksu (Korean Spicy Cold Noodles)
• Oyakodon (Japanese Chicken & Egg Rice Bowl)

Print Recipe

5 from 21 votes

10-Minute Zaru Soba (Cold Soba Noodles)

This quick & easy zaru soba recipe features cold soba noodles dipped in an ultra-flavorful Tsuyu sauce made with only 4 simple ingredients from your pantry! This light and refreshing meal takes just a few minutes to prepare, and truly the ultimate way to cool down on a hot summer day. 

Prep Time5 minutes mins

Cook Time5 minutes mins

Total Time10 minutes mins

Course: Breakfast, Dinner, Lunch, Meal Prep

Cuisine: Japanese

Servings: 2 people

Calories: 252kcal

Ingredients

• 2 bundles (200g) soba noodles
• shredded seaweed, toasted sesame flakes for garnish, optional
• green onion, grated daikon, wasabi, and/or egg yolk for the dipping sauce, optional

Dipping sauce

• 1 cup dashi see notes below
• 1/4 cup soy sauce
• 1/4 cup mirin
• 1 tbsp sugar or to taste

Instructions

• Add dashi, soy sauce, mirin, and sugar into a saucepan and mix to combine. Once the mixture comes to a boil, remove from heat and place in the fridge or freezer to cool.
• Cook noodles according to package instructions. Drain the noodles in a strainer and rinse under cold running water to remove the excess starch. Shake well to drain, transfer to a plate, and garnish to your preference.
• Pour the dipping sauce into a bowl and dress to your liking. Dip a portion of the noodles in the sauce and enjoy!

Notes

To prepare dashi, add 1/2 tsp of instant dashi powder with 1 cup of water and mix to combine. You can also use low-sodium chicken stock, or use a 2:1 ratio of regular chicken stock and water. 

The dipping sauce is good for up to 2 weeks in the fridge when stored in an airtight container. If you prefer the sauce to be extra cold, place it in the freezer for a few minutes before serving or add a few ice cubes to the sauce. 

For more ingredient details and serving suggestions, please refer to the blog post above.

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Nutrition

Calories: 252kcal