Whole 30 Classic Dashi
This deeply savory Japanese stock is built on just three ingredients — water, kombu, and bonito flakes — which makes it a natural fit for anyone eating clean and avoiding additives, preservatives, or hidden sugars. The technique is all about patience and low heat: the kombu is scored and cold-soaked to coax out its umami without any bitterness, then the bonito flakes are steeped off the heat so the broth stays delicate and clear. The result is a golden, subtly oceanic liquid that tastes far more complex than its ingredient list suggests. Store-bought broths and soup bases are notorious for sneaking in soy, sweeteners, or "natural flavors" that can derail a whole month of careful eating — making a homemade batch like this one genuinely worth the effort. It comes together with minimal hands-on time and keeps in the fridge for up to three days, so you can use it as a base for soups, braises, or sauces all week long. Clean, elegant, and endlessly versatile, this is the kind of foundational recipe that quietly upgrades everything else you cook.
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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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