Mousseline of Eggs, Mimi

Mousseline d’Œufs Mimi (Mimi-style egg mousseline) teaches the discipline of gentle heat. The one true thing to know is this: the water in the bain-marie must tremble, never boil. Gentle water sets the Meringue à l’Italienne (No. 2383) into a tender, close mousseline; boiling water knocks out its air and leaves it rubbery at the edges.

The original assumed a pastry station where hot sugar and whipped whites could be ready together, eight whites at a time, followed by a broad service mould and plenty of cold space. Your honest equivalent is a stand mixer, half a batch of meringue in the book’s exact proportion, a 1-quart smooth metal mould, and a lidded pot. The large batch and ice bench were brigade scaffolding, so they go. The caramel clothing, Italian meringue, gentle poach, and complete chilling are the dish itself, so they stay. One cook, one stove, one evening.

Turned out cold, the mousseline stands ivory-white beneath an amber caramel glaze, soft enough for a spoon but firm enough to hold its crown. Tart stewed fruit and crème anglaise wait separately, as the formula directs, so each guest chooses the balance. The step that decides everything is the poach: keep the bath trembling, never boiling.