Japan — Hokkaido and Aomori Prefecture as primary production areas; aquaculture of hotate in Saroma Lake (Hokkaido) produces the majority of Japan's commercial scallop supply; wild Hokkaido scallops command a significant premium
Hotate (帆立, Japanese scallop, Patinopecten yessoensis) from Hokkaido and Aomori Prefecture is among Japan's finest bivalves — large, sweet, with a buttery, creamy texture in the raw state that transitions to firm and caramelised under heat. The full scallop includes: the white muscle (the part primarily eaten in the West), the coral/roe (orange female roe — sweet and creamy), and the surrounding skirt (the frill — chewy, good for stock). Japanese preparation spans the full range: sashimi (the white muscle sliced or served as a single whole piece), batayaki (pan-fried in butter — the most popular izakaya preparation), grilled in the shell with butter and soy sauce (hotate no kaidake), dried hokkai hotate as an intense umami cooking ingredient, and shavings of dried scallop (kanibara) for dashi or seasoning.
Raw: extraordinary clean sweetness, creamy, cold-water briny mineral; seared: caramelised, buttery, more concentrated sweetness, firm; dried: intensely concentrated, complex oceanic umami with a distinctive dried seafood depth
Fresh Hokkaido scallop sashimi: slice the white muscle horizontally into 3–4 rounds or serve whole; the texture should be firm yet yielding with a clean, creamy sweetness. For batayaki: sear in butter at very high heat until golden on the flat faces (30–45 seconds per side); the interior should remain rare to medium-rare — overcooked scallop becomes rubbery immediately. Include the coral roe for a complete flavour experience. Dried scallop (conpoy): an extraordinarily concentrated umami product — a small piece dissolved in cooking liquid or added to dashi multiplies the umami of the preparation dramatically.
Hokkaido hotate in the summer months (June–August) are at their fattest and sweetest — the cold water preceding summer warms slightly, triggering the scallop's maximum energy storage. For batayaki: do not crowd the pan — scallops need space to sear rather than steam. A squeeze of lemon and a drop of soy sauce as the only condiment for batayaki allows the scallop's inherent sweetness to dominate. Dried scallop (Chinese conpoy) can be used in Japanese cooking as a powerful umami amplifier — break one dried scallop into a simmering dashi pot and the IMP+GMP synergistic effect with kombu glutamates is dramatically perceptible.
Overcooking fresh scallop — the transition from perfect to overcooked is rapid and the resulting texture is unpleasant. Discarding the coral roe, which has a distinctive, sweeter, more complex flavour than the muscle. Using room-temperature or warm scallops for sashimi — they must be well-chilled. For dried scallop: not soaking adequately in cold water before use — they require several hours of soaking to become pliable.
Tsuji, Shizuo — Japanese Cooking: A Simple Art; Davidson, Alan — The Oxford Companion to Food; Hokkaido fisheries documentation