Inago no Tsukudani

Insect-eating has deep roots in the Ina valley and the wider mountain districts of southern and central Nagano, where the sea was far and animal protein scarce; alongside inago, the region also ate hachinoko (wasp larvae), kaiko no sanagi (silkworm pupae), and zazamushi (aquatic insect larvae). Inago were gathered from rice paddies, traditionally a free by-catch of farming, and preserving them as tsukudani in soy and sugar made the autumn surplus last. The custom predates modern refrigeration and reflects the resourceful, waste-nothing food culture of the inland highlands.

Crisp-tender and entirely edible, legs and all; the long simmer softens them while the sugar glaze gives a candied snap. The flavor is the tsukudani profile — deeply sweet-salty, soy-dark, with the slight roasted nuttiness of the insect itself underneath. Eaten a few at a time over hot white rice or with sake or beer; the texture is closer to a crunchy candied nut than to anything squeamish eaters expect.

The inago are first kept a day to purge their gut, then blanched; the tsukudani technique then does the preserving work — simmering in a concentrated soy-sugar-mirin mixture drives off water and drives in sugar and salt, lowering water activity so the finished relish keeps for weeks at room temperature, exactly as for kombu or small-fish tsukudani. Cooking down until the liquid glazes the bodies is what gives the characteristic gloss; a little final sugar or mizuame sets the sticky coat.