Kombu-Infused Miso Soup with Fresh Tofu and Wakiyama Seaweed

By , Test Kitchen Director · Reviewed by AislePrompt Editorial · ·

A true-to-Japan dashi broth simmered with authentic kombu for 30 minutes, featuring silky silken tofu and delicate wakiyama seaweed for a soul-warming, umami-rich experience. This japanese-inspired asian ready in about 50 minutes pairs kombu, water, silken tofu for a weeknight-friendly dinner that comes together with one pan and minimal cleanup. Each serving lands at about 185 calories and feeds 2, so it slots cleanly into a weekly meal plan and pairs well with a quick salad or grain on the side. Tap "Plan a meal with the AI" below to drop this recipe into your week and send the ingredients straight to Instacart. Nutrition values are approximate, calculated from USDA FoodData Central (fdc.nal.usda.gov) — verify against ingredient labels for any health-driven dietary plan.

★ 4.0 (13 ratings) Prep: 35 min Cook: 15 min Serves 2 Japanese cuisine 185 cal/serving
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Ingredients

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Instructions

  1. Step 1: Place 10 grams kombu in 800 milliliters cold water in a pot and let it steep for 30 minutes at room temperature, never bringing to a boil to preserve delicate flavors.
  2. Step 2: Gently heat the kombu broth over low heat until just below simmering (160°F/71°C), then remove the kombu immediately to prevent bitterness.
  3. Step 3: Cut 200 grams silken tofu into 1-inch cubes and add to the broth, simmering gently for 2 minutes until heated through.
  4. Step 4: Stir 3 tablespoons miso paste into 2 tablespoons of hot broth until smooth, then whisk back into the pot, avoiding boiling to maintain probiotic benefits.
  5. Step 5: Add 5 grams wakiyama seaweed and sliced green onions from 2 stalks, cooking for 30 seconds until seaweed softens and flavors meld.

Frequently asked questions

How long does Kombu-Infused Miso Soup with Fresh Tofu and Wakiyama Seaweed take to make?

Total time is about 50 minutes (35 min prep + 15 min cook). Most home cooks find this fits comfortably into a weeknight; double the batch on Sunday for two dinners.

How do I store leftover Kombu-Infused Miso Soup with Fresh Tofu and Wakiyama Seaweed?

Cool to room temperature within 2 hours, then store in an airtight container in the fridge for up to 4 days. Reheat covered in a 350°F oven for 10-12 minutes, or microwave at 70% power in 60-second bursts to keep kombu from drying out.

Can I substitute ingredients in Kombu-Infused Miso Soup with Fresh Tofu and Wakiyama Seaweed?

Yes — most ingredients in this recipe have flexible swaps. For oil, use any neutral high-smoke-point oil (avocado, grapeseed, refined coconut). For aromatics, dried herbs at ⅓ the volume of fresh work in a pinch. The full ingredient list is shoppable on Instacart so you can see substitutes in real time.

How do I scale Kombu-Infused Miso Soup with Fresh Tofu and Wakiyama Seaweed for a different number of people?

The recipe is written for 2 servings. Multiply each ingredient by (your serving target / 2). Cook time stays roughly the same up to 2x; for 3-4x batches, switch from a skillet to a sheet pan or stockpot so the food isn't crowded — overcrowding steams instead of browns.

What goes well with Kombu-Infused Miso Soup with Fresh Tofu and Wakiyama Seaweed?

Japanese asian like this pair well with a simple grain (rice, couscous, or crusty bread), a quick salad with acid (lemon vinaigrette, pickled onions), and a pan sauce or yogurt-based dip. Tap "Plan a meal with the AI" to get specific side suggestions.

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