Zaru Soba
Ingredients
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- 4 cups water
- 1/3 ounces kombu
- 1/2 ounces bonito flakes
- 1/2 cups mirin
- 1/2 cups soy sauce
- 12 ounces soba noodles
- nori – cut into thin strips (for serving)
- scallions – thinly sliced (for serving)
- wasabi paste – (for serving)
Instructions
1. Make the dashi: Combine the water and kombu in a saucepan and let sit 10 minutes. Warm over medium heat until small bubbles form around the edges, 5–7 minutes; remove the kombu just before boiling. Bring to a boil, add the bonito flakes, simmer 30 seconds, then turn off the heat and steep 10 minutes. Strain through a fine sieve; discard solids.
2. Make the dipping sauce (tsuyu): In a clean saucepan, bring the mirin to a gentle simmer over medium heat and cook 2 minutes to burn off alcohol. Add the soy sauce and 2 cups of the dashi; return to a bare simmer for 1 minute. Cool to room temperature, then chill until cold, 20–30 minutes.
3. Cook the noodles: Bring a large pot to a rolling boil. Add the soba noodles, stirring to prevent sticking, and cook 4–5 minutes (or per package) until just tender but springy.
4. Rinse and chill: Drain the soba in a colander. Immediately rinse under cold running water, rubbing the strands between your fingers to remove surface starch, 30–60 seconds, until the water runs clear. Drain well.
5. Serve: Portion the soba onto bamboo trays or plates and sprinkle with the nori. Pour the cold tsuyu into small cups. Serve with the scallions and wasabi paste (for serving); mix the condiments into the tsuyu to taste and dip the noodles as you eat.
Zaru Soba is a chilled Japanese buckwheat noodle dish served on a bamboo tray with a deeply flavored dipping sauce called tsuyu. The noodles are rinsed until squeaky-clean and cool, giving them a supple, springy bite that contrasts with the savory, lightly sweet sauce. Thin strips of toasted nori add aroma, while scallions and wasabi let you tailor each dip to your taste.
Originating as a refreshing warm-weather meal, Zaru Soba showcases the Japanese emphasis on purity of flavor and texture. The dish gained popularity during the Edo period alongside soba shops that served quick, nourishing fare. Today it remains a staple of soba-ya and home kitchens alike, prized for its elegant simplicity and seasonless appeal.