Chawanmushi

Chawanmushi is generally said to have begun in the Kansei era (late 18th century) around Kyoto and Osaka, spreading to Edo and Nagasaki; in Nagasaki it became closely tied to the city's Chinese-Dutch-Japanese shippoku cooking — a fusion style developed in the 17th-18th centuries among Chinese, Dutch, and Japanese traders in the only port open during the sakoku isolation. The original technique borrowed from Chinese steamed egg, but the addition of dashi and the kaiseki-style hidden treasures inside made it Japanese. By the late Edo period it had spread nationally as a refined home and ryotei dish.

A savory egg custard steamed at 85°C — any hotter and it sets coarse with bubbles. Dashi-to-egg ratio is 3:1; under that it tastes like flan, over it never sets.

A small lidded teacup of pale yellow egg custard, set just to a tremble, eaten with a spoon. Beneath the smooth surface: a shrimp, a slice of chicken, a ginkgo nut, a piece of shiitake, sometimes lily bulb. The custard tastes of dashi first, egg second — savory, not sweet. The texture should jiggle continuously when nudged; if it's stiff or pitted with bubbles, it was steamed too hot.

Three-to-one is the load-bearing ratio: three parts dashi to one part beaten egg, by volume. Too little dashi and it sets like sweet egg; too much and it never sets at all. Strain the mixture twice through fine mesh to remove chalazae and air pockets. Steam at very low heat (around 85°C) with the lid cracked to let steam escape — full-pressure steam over-cooks the egg and creates the bubble holes amateurs blame on bad luck.