Invented in 1959 in Tsu City, Mie Prefecture, by Mrs. Yone Mizutani at her shop Senjuya, who was looking for a way to use leftover shrimp tempura from her husband's restaurant. The dish migrated to Nagoya around 1981 when a Nagoya couple (the Fujimoris, former clock-shop owners) won an noren-wake branch license after a month of persistent requests, on condition they not spread it widely; a 1982 TV feature then made it explode; Nagoya then claimed it as a local specialty so thoroughly that most Japanese now associate it with Nagoya rather than Mie.
Invented 1959 in Tsu City, Mie, by Mrs. Mitsue Mizutani at Senjuya — a way to use her husband's leftover shrimp tempura. Nagoya licensed it via a bento chain in the 1980s and now most Japanese think it's a Nagoya dish.
A small palm-sized onigiri, slightly cone-shaped, with a shrimp tempura tail sticking out the top. The shrimp inside is dipped in tentsuyu before being wrapped, so the rice underneath is faintly soy-stained and salty. Nori band at the base. Eat in two bites, room temperature; the contrast is crisp tempura batter against soft seasoned rice.
The shrimp dip in tentsuyu is what makes it tenmusu rather than rice with a tempura on top — the soy-mirin-dashi liquid soaks slightly into the rice, seasoning it from inside out. Modern shops use shorter-tailed shrimp than the 1959 original because the protruding tail was originally a serving handle, not aesthetics. Eat within two hours of making; the batter goes leathery once moisture from the rice migrates outward.
Variations
Senjuya (Tsu, since 1959) keeps the original long-tail shrimp; Nagoya's Geihinkan chain runs the modern short-tail commercial form; Maruha is the Tokyo station-shop version; supermarket konbini tenmusu uses pre-fried frozen shrimp and tastes like cardboard handle.
On the Palate
Where Tenmusu sits in the Japanese flavor cloud
Ingredients
How it's made
5 steps · 30 min
- 12 min
Prepare sushi rice and season with salt.
- 28 min
Dip shrimp in a batter made from wheat flour and egg, then deep-fry until golden.
Watch outFry the shrimp till the batter is crisp and pale gold — eat within a couple hours, because moisture from the rice soon turns the coating leathery.
- 35 min
Shape a portion of rice into a ball, creating a hollow for the tempura.
- 45 min
Place the shrimp tempura in the center and wrap the rice around it.
Watch outDip the fried shrimp in tentsuyu so the liquid soaks a touch into the rice — that seasoning from inside is the whole point, not rice with a tempura sitting on top.
- 52 min
Wrap the onigiri with nori and serve.
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