Homemade Miso Soup 味噌汁

Ingredients

For the Dashi (makes a scant 4 cups)

• 4 cups water
• 1 piece kombu (dried kelp), ⅓ oz / 10 g, ~4"×4"
• 1 cup katsuobushi (dried bonito flakes), packed

For the Miso Soup

• 7 oz silken/soft tofu (kinugoshi dofu)
• 4 tablespoons miso paste (1 tablespoon / 18 g per cup of dashi; adjust to taste)
• 1 tablespoon dried wakame seaweed
• 1 green onion / scallion, thinly sliced

Instructions

Make the Dashi

1. Soak and heat kombu — Add 4 cups water and the kombu to a medium saucepan. If you have time, soak 30 minutes first. Do not wash the kombu — the white substance is umami.
2. Slowly heat — Bring to a near-boil slowly over medium-low heat (~10 minutes) to extract maximum umami. Remove the kombu just before boiling to avoid bitterness and sliminess. (At this point you have Kombu Dashi — vegan-friendly.)
3. Add katsuobushi — For Awase Dashi, add the bonito flakes and bring back to a boil. Reduce heat and simmer just 30 seconds.
4. Steep and strain — Turn off heat and let the flakes sink for about 10 minutes. Strain through a fine-mesh sieve. You'll have ~4 cups of awase dashi.

Make the Miso Soup

1. Heat the dashi — Bring dashi to a slow boil over medium heat (~205°F / 96°C), then turn off the heat.
2. Dissolve the miso — Place the miso in a ladle or fine-mesh strainer, slowly add hot dashi into it, and stir with chopsticks until fully dissolved. Never drop miso directly into the pot or you'll get clumps.
3. Add tofu — Cut tofu into ½-inch (1.3 cm) cubes and add to the soup after the miso is fully dissolved, so the tofu doesn't break apart during stirring.
4. Finish with greens — Add the dried wakame and chopped scallions right before serving for the best color and fragrance.
5. Serve immediately — Don't reboil; boiling diminishes miso's flavor and aroma.

Notes

• Critical rule — never boil miso — Boiling wrecks the aroma and flavor. If reheating, warm gently to a simmer (~190°F / 88°C) max.
• Dashi shortcuts — A dashi packet (steep like tea, 5 min) or dashi powder (3 min) work in a pinch but with less flavor. Skip "dashi-included miso" — it lacks the benefits of fresh miso.
• Miso choice — White (shiro) is mild and sweet; red (aka) is bolder; yellow (awase) is balanced. Blend types for complexity.
• Miso ratio — 1 tablespoon (18 g) miso per 1 cup (240 mL) dashi is the standard; adjust to taste.
• Silken vs. medium tofu — Silken gives a custardy texture; medium is spongier. Both are classic.
• Wakame tip — If watching salt, rehydrate the dried wakame in a separate bowl of water and drain before adding.
• Make ahead — Dashi keeps 3–5 days refrigerated or up to 2 weeks frozen. Store finished soup up to 2 days refrigerated (4 hrs max at room temp). For big batches, refrigerate the soup without miso and add miso per serving.
• Freezing — Remove tofu before freezing (texture suffers). Soup freezes up to 2 weeks.
• Add vegetables — Root vegetables go in cold dashi and cook 10–15 minutes. Leafy greens and mushrooms go into simmering dashi for just a few minutes.
• Use spent kombu/katsuobushi — Turn them into tsukudani or homemade furikake.

Nutrition (per serving)

Tags: #recipe #soup #japanese #miso #tofu #dashi #vegetarian #quick