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Under 30 Minutes

Japanese Squash-and-Soba-Noodle Soup

Unlike the other soups in this story, this one shouldn't be made ahead. But it can be prepared very quickly.

  • Prep:
  • Total Time:
  • Servings: 4
Japanese Squash-and-Soba-Noodle Soup

Source: Martha Stewart Living, January 2013


  • 5 cups water
  • 3/4 ounce kombu (four 5-inch pieces)
  • 1/3 cup bonito flakes
  • 2 tablespoons soy sauce, plus more for seasoning
  • 1 pound kabocha or buttercup squash, peeled and cut into 1-inch pieces
  • 3 1/2 ounces White Beech (Bunapi), enoki, or shiitake mushrooms, trimmed
  • 8 ounces soba noodles, preferably 100 percent buckwheat
  • Silken tofu (optional), for serving
  • Thinly sliced scallions, for garnish


  1. Bring water and kombu to a boil in a large saucepan. Remove from heat, stir in bonito flakes, and let stand 5 minutes. Pour broth through a fine sieve into a bowl, discard solids, and return broth to pan.

  2. Add soy sauce, squash, and mushrooms to broth. Bring to a boil over high heat, reduce heat, and simmer, stirring occasionally, until squash is tender, about 10 minutes. Season with more soy sauce if desired.

  3. Bring a large pot of water to a boil. Add noodles, and cook, stirring occasionally, until noodles are al dente, 5 to 7 minutes. Drain, and rinse under cold water.

  4. Divide noodles among 4 bowls. Ladle soup over noodles, dollop with tofu, and garnish with scallions.

Cook's Note

There are no substitutes for kombu and bonito flakes -- two necessary ingredients in the simple Japanese sea stock called dashi -- but they are easy to find at Asian markets, many supermarkets, and

Reviews (1)

  • J Brenner 27 Oct, 2014

    I had wanted to find a recipe that could come as close as possible to replicate our favorite soup from a local Japanese Restaurant. This sounded pretty close so I gave it a try. It was really easy to make and tasted absolutely delicious. It wasn't exactly the same as the one I was trying to recreate but honestly I think I liked this one more. The hardest part about making this was finding the ingredients. Luckily I found the site and they had everything it called for.

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