背せ開びらき

noun

butterflying a fish from the back

A fish preparation technique where the fish is split open along the dorsal side, often used for grilling or drying. Contrasts with 腹開き (はらびらき), where the fish is opened from the belly.

• アジを背せ開びらきにして干ひ物ものを作つくる。

  I butterfly the horse mackerel from the back and make dried fish.