Chestnut Free Classic Dashi
This foundational Japanese broth is built on just three ingredients — cold water, kombu, and bonito flakes — and the result is a clean, deeply savory liquid that forms the backbone of countless dishes. The technique is all about patience and gentle heat: the kombu is scored and slowly coaxed into the water, releasing its umami without ever reaching a boil, which keeps the flavor delicate rather than bitter. Once the kombu is removed, a brief steep with katsuobushi adds that signature smoky, oceanic depth before the flakes are strained away and discarded. What you're left with is a beautifully clear, golden broth that tastes far more complex than its short ingredient list suggests. For anyone navigating tree nut concerns, this recipe is naturally free of any such ingredients — no hidden additions, no ambiguous pantry staples, just pure, traditional technique. It comes together with minimal equipment and keeps in the refrigerator for up to three days, making it easy to batch ahead for miso soup, noodle broths, or simmered vegetables all week long.
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Learn more →Ingredients
4 servings
- 4 cups cold water
- 1 oz (about 15–20 g) kombu
- 1 oz (about 1 packed cup) katsuobushi (bonito flakes)
Instructions
- 1
Use kitchen scissors or a knife to score the kombu with a few shallow cuts along its surface, then place it in a medium saucepan with the cold water. Let it soak for 30 minutes, until the kombu has softened and the water has taken on a faint golden tint.
- 2
Set the saucepan over medium-low heat and warm the kombu and water slowly, until small bubbles begin to form at the bottom of the pan and the water reaches about 140–150°F (60–65°C) — just below a simmer. This should take about 10 minutes. Do not let the water boil.
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