縁側 · エンガワ · engawa

Engawa

Engawa is the chewy, fatty fin muscle of flatfish — the frilly strip that powers a flounder's fin. Rich and gelatinous, it's a connoisseur's cut, usually served raw or lightly seared.

Also known as

fluke fin, halibut fin, fin muscle

Species

Paralichthys olivaceus et al. (fin-muscle cut of flatfish)

Category

White-flesh fish (shiromi)

Texture

chewy, gelatinous — rich, springy, collagen-rich

Peak season

Dec, Jan, Feb

Sustainability

varies — Quality engawa comes from wild hirame and karei; cheap conveyor-belt engawa is usually Greenland halibut or arrowtooth flounder.

Mercury

Not in the FDA consumer table

Pregnancy

Eat in moderation

Price tier

$$

The fin that does the work

Engawa is the narrow band of muscle running along the dorsal and anal fins of a flatfish. Those fins ripple constantly as the fish hugs the seabed, so the muscle that drives them is hard-working — collagen-rich and fatty, chewier, springier and far richer than the lean fillet beside it. A whole fish yields only four thin strips, which is exactly why it’s prized.

How it’s served

Often served raw for its gelatinous snap, engawa is also superb lightly torched (aburi): the heat softens the collagen and brings out a buttery richness. A pinch of salt and a squeeze of citrus is all it needs.

What you’re actually eating

Here’s the catch: a single hirame yields only a sliver of engawa, so most cheap kaiten-zushi “engawa” isn’t fluke at all — it’s the fin muscle of Greenland halibut or arrowtooth flounder, big cold-water flatfish that can supply it in volume. Tasty, but a different animal. The real prize is engawa cut from wild hirame or karei — see the flatfish compared.

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