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Green Tea Soba Noodles: How to Cook & Serve Cold

In the heat of a Japanese summer, hot soup is the last thing you want. Enter Cha Soba (Tea Soba)—buckwheat noodles infused with Matcha green tea powder.

These beautiful jade-green noodles have a subtle, grassy aroma that is easily destroyed by hot broth. The traditional way to serve them is Zaru Soba style: chilled, on a bamboo mat, with a savory dipping sauce on the side. It is refreshing, light, and elegant.

A plate of cold green soba noodles on a bamboo mat with dipping sauce.
Prep Time5 mins
Cook Time5 mins
Servings2 People

Ingredients

  • 200g Dried Cha Soba Noodles (Look for the green package)
  • 1/2 cup Mentsuyu / Tsuyu (Soup Base - available at Asian grocers)
  • 1/2 cup Ice Cold Water (To dilute the sauce)
  • Toppings: Shredded Nori (Seaweed), Chopped Scallions, Wasabi Paste

Instructions

1.
Boil: Bring a large pot of water to a rolling boil. Do not add salt (soba noodles are already salty). Add the noodles and spread them out.
2.
Cook: Stir gently to prevent sticking. Cook for 4-5 minutes (check the package, they cook fast!). They should be firm, not mushy.
3.
The Ice Shock: This is the most important step. Drain the noodles and immediately plunge them into a bowl of ice water.
4.
Wash: Use your hands to gently rub the noodles in the cold water. This washes away the excess starch and creates that signature slippery, chewy texture.
5.
Serve: Drain well. Pile onto a plate or bamboo mat. Top with nori. Mix the Tsuyu with cold water in a separate small bowl. Dip the noodles into the sauce as you eat.

Save the Water!

In Japan, the cloudy cooking water (Soba-yu) is never thrown away. It contains nutrients and starch. At the end of the meal, pour the hot cooking water into your remaining dipping sauce to turn it into a warm, comforting soup to finish.