Hirame — Flounder in Japanese Cuisine

Japan-wide — Sea of Japan and Pacific coast, peak season November–February

Hirame (Japanese flounder, Paralichthys olivaceus) is considered the most refined flatfish in Japanese cuisine — prized for its clean, delicate white flesh, its extraordinarily subtle sweetness, and the textural variation between the thin outer muscle strips (engawa) and the main fillet. Hirame is the winter prestige white-fish sashimi alongside tai (sea bream): its season peaks in the coldest months when flounder accumulate fat reserves. In sashimi preparation, hirame's thin muscle fibres require precise cutting (hira-zukuri for standard slices, or very thin suji-zukuri to highlight translucency); the thin, fatty engawa (fin muscle) is a separate and highly prized cut. Beyond sashimi: hirame kobujime (kombu-pressed aging) is a classic preparation that concentrates the fish's sweetness and adds mineral depth; hirame karaage (deep-fried flounder) is a casual preparation using the whole bones; carpaccio-style hirame with citrus has become a contemporary restaurant standard.

Extremely delicate, clean sweetness with subtle oceanic freshness; engawa has richer fat and distinct chewy texture; kobujime adds mineral depth without masking the natural delicacy