Dashi-Infused Tofu and Wakame Soup

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

A soothing bowl of silky tofu and wakame seaweed gently simmered in a fragrant dashi broth, showcasing the delicate flavors of Japanese soup tradition. This japanese (vegetarian) ready in about 15 minutes pairs dashi stock, soft tofu, dried wakame seaweed for a weeknight-friendly dinner that comes together with one pan and minimal cleanup. Each serving lands at about 90 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.

Prep: 5 min Cook: 10 min Serves 2 Japanese cuisine 90 cal/serving
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Ingredients

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Instructions

  1. Step 1: Soak 1 tbsp dried wakame seaweed in 1/4 cup warm water for 10 minutes until rehydrated and expanded. Drain excess water.
  2. Step 2: In a medium pot, bring 4 cups dashi stock to a gentle simmer over medium heat. Add 1 tbsp soy sauce and 1 tbsp mirin, stirring to combine.
  3. Step 3: Cut 7 oz soft tofu into 1-inch cubes and gently add to the simmering broth along with the rehydrated wakame. Simmer for 3-5 minutes until the tofu is warmed through but not breaking apart.
  4. Step 4: Thinly slice 2 scallions and sprinkle over the soup before serving hot.

Frequently asked questions

How long does Dashi-Infused Tofu and Wakame Soup take to make?

Total time is about 15 minutes (5 min prep + 10 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 Dashi-Infused Tofu and Wakame Soup?

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 dashi stock from drying out.

Can I substitute ingredients in Dashi-Infused Tofu and Wakame Soup?

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 Dashi-Infused Tofu and Wakame Soup 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.

Is Dashi-Infused Tofu and Wakame Soup vegetarian?

Yes — this recipe is tagged vegetarian based on its ingredient list. Always cross-check labels for packaged ingredients (sauces, broths, condiments) since formulations vary by brand.

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