Authentic Shio-Kombu Miso Soup with Wakiimo
A minimalist Japanese soup embodying true umami harmony, featuring delicate kelp-infused broth and seasonal root vegetables. This japanese-inspired quick meals ready in about 30 minutes pairs kelp (kombu), white miso paste, wakiimo (sweet potato) for a weeknight-friendly dinner that comes together with one pan and minimal cleanup. Each serving lands at about 85 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.
Ingredients
- 30g kelp (kombu)
- 15g white miso paste
- 120g wakiimo (sweet potato)
- 40g daikon radish
- 20g green onion
- 1.2L water
Instructions
- Step 1: Cut wakiimo into 1/2-inch cubes and daikon into thin matchsticks. Place 30g kelp in a pot with 1.2L water and bring to 80°C (176°F) over medium-low heat, just below simmering.
- Step 2: Remove kelp immediately when water turns slightly cloudy (about 3 minutes), then add wakiimo and daikon. Simmer gently for 12 minutes until vegetables are tender but hold shape.
- Step 3: Stir 15g miso paste into a ladle of hot broth until fully dissolved, then return to pot. Heat until steaming but not boiling (do not boil, as it destroys miso's flavor).
- Step 4: Cut green onion into 1-inch pieces and stir into soup. Serve immediately while broth is still warm.
Equipment for this recipe
Top-rated tools to make this recipe successfully.
Frequently asked questions
How long does Authentic Shio-Kombu Miso Soup with Wakiimo take to make?
Total time is about 30 minutes (15 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 Authentic Shio-Kombu Miso Soup with Wakiimo?
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 kelp (kombu) from drying out.
Can I substitute ingredients in Authentic Shio-Kombu Miso Soup with Wakiimo?
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 Authentic Shio-Kombu Miso Soup with Wakiimo 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 Authentic Shio-Kombu Miso Soup with Wakiimo?
Japanese quick meals 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.
What others are saying
- ★★★★☆
Enjoyable meal. Instructions could be a touch more detailed on the timing.
- ★★★★☆
Almost perfect — just needed a squeeze of lemon at the end.
- ★★★★☆
Almost perfect — just needed a squeeze of lemon at the end.
