Fugu Tessa

Pufferfish has been eaten in the Shimonoseki area since prehistory, but for much of the early-modern period it was officially forbidden: a ban on fugu-eating is traced to Toyotomi Hideyoshi, after samurai mustering for the Korean campaigns died of poisoning, and the prohibition was carried into the Meiji era, when the law still punished those who ate it. The well-known account credits the first prime minister, Ito Hirobumi: lodging at the Shunpanro inn in Shimonoseki around 1887, he was served forbidden fugu by the proprietress one stormy day when no other fresh fish could be landed, pronounced it superb, and the following year, 1888, had the Yamaguchi governor lift the prefecture's ban, making Shunpanro the first house licensed to serve fugu. The dish's Kansai nicknames come from gallows slang: because the toxin can kill, the fish was called teppo, a gun or rifle, and from teppo no sashimi came the contraction tessa, just as teppo no chiri-nabe gave the hot-pot tecchiri. Shimonoseki's Haedomari market remains the country's principal fugu clearing-house, and the city styles itself the home of fugu.

Each sliver is so thin it is nearly transparent, and the first impression is texture rather than flavor: a cool, taut, faintly resilient snap that gives way to a clean, almost sweet finish with very little of the fishiness of softer fish. Torafugu flesh is unusually firm and high in collagen, so a thick cut would be rubbery to chew; sliced this thin it turns silky and delicate, the resistance just enough to feel. The ponzu's citrus tartness and the heat of the momiji-oroshi and negi sharpen the mild meat, and the slivers are eaten in small rolled bundles to gather garnish and fish in one bite.

The whole technique answers the fish's biology. Torafugu muscle is dense and rich in connective collagen, which makes it firm to the point of chewy in any ordinary cut, so the chef slices it usuzukuri, almost translucently thin and on a slight bias across the grain, to shorten the fibers and turn resistance into a silky melt; the slices are laid on a patterned plate precisely because their thinness is meant to be seen. The deadly reason for the licensing is tetrodotoxin, a heat-stable neurotoxin concentrated chiefly in the liver and ovaries that blocks the sodium channels of nerve and muscle; cooking does not destroy it, the lethal dose for an adult is on the order of one to two milligrams, and there is no antidote, so the law confines preparation to chefs who pass a prefectural examination in identifying and removing the toxic organs. The flesh of torafugu is itself non-toxic when the poisonous parts are cleanly excised, and the flavor is built less on fat than on free amino acids and inosinate, which read as a quiet, clean sweetness that the ponzu and momiji-oroshi are chosen to lift rather than mask.