Dashi (Kombu-Katsuo)

Origin: Japan. A foundational stock made by steeping kombu (dried kelp) in near-boiling water, removing it just before boiling, then adding katsuobushi (dried bonito flakes) and straining — the single most foundational stock in Japanese cuisine.

Flavor Profile: Delicately savory-umami with a clean oceanic quality, far lighter than most meat-based stocks.

Culinary Uses: Base for miso soup, noodle broths, and countless simmered dishes; the foundation from which much of Japanese cuisine’s flavor structure is built.

Regional Variations: Ichiban dashi (first extraction, most delicate) versus niban dashi (second extraction from the same kombu/katsuobushi, more robust and used for heartier dishes) represent a foundational technical distinction.

Storage: Best used fresh the same day; refrigerate up to 2 days, though flavor is noticeably diminished.

Notes: Ponzu typically uses dashi as one of its base components.