Making Basic Kombu Dashi
This is the simplest way to extract depth from the sea. By respecting the temperature of the water, you avoid drawing out bitterness and keep the broth clear.
Patience is your main ingredient.
The quality of your kombu determines the final result; look for white, powdery residue on the surface, which is pure flavor, not mold.
- Medium saucepan
- Fine mesh strainer
- Measuring cup
What goes in.
- 4 cupscold water
- 1 piece (approx 4x4 inch)dried kombu
Temperature Control
Remove the kombu the moment the water begins to shimmer and small bubbles form at the edges. If you boil the kelp, the broth turns slimy and bitter.
The method.
Soak the kombu
Wipe the kombu surface gently with a damp cloth. Place it in the saucepan with the water and let it sit for at least an hour.
Heat gently
Turn the heat to medium-low. Watch the pot closely as the water warms. Do not let it reach a rolling boil.
Extract and strain
Just before the water boils, remove the kombu with tongs and discard. Strain the liquid through a fine mesh sieve to catch any stray debris.
Other turns to take.
Awase Dashi
After removing the kombu, stir in a handful of katsuobushi (dried bonito flakes) and let it steep for 30 seconds before straining.
When it doesn't go to plan.
Keep your used kombu in the freezer to make tsukudani or a second, stronger extraction later.
Use filtered water if your tap water is heavily chlorinated to keep the flavor profile clean.
Store the dashi in a glass jar in the refrigerator for up to three days.
The ones that keep coming up.
Can I boil the kombu to make it faster?
No. Boiling extracts tannins and mucilage that create an unpleasant texture and cloudy appearance.
How real cooks make it.
No one’s shared their version yet. Be the first to put your kitchen on the map.
Cook this your way?
Share your version — your steps, your story. We’ll feature it right here.
Add your recipe