Pudding de Castries

Pudding de Castries (a layered frozen mould) teaches one law above all: cold is structure. The vanilla and tangerine bands must freeze firm before they touch, or their clean stripes run together and the bombe loses the architecture that makes each slice splendid.

The original kitchen needed neither a saucier nor a stockpot for this dessert. Its privilege was a glacier managing several frozen preparations and a metal bombe packed tightly in salted ice. At home, one pâte à bombe is divided and flavoured two ways, a full-fat vanilla ice cream clothes and seals the mould, and the coldest shelf of an ordinary freezer replaces the ice chest. Making a separate churned vanilla ice is brigade scaffolding, so good prepared ice cream may take that job. The vanilla shell, alternating bombe preparations, anisette biscuits, chocolate, red pralin, and tangerine syrup are the dish itself, and every one stays.

When it is cut, the ivory shell should hold broad pale-gold and tangerine-coloured bands, little cubes of fragrant biscuit, and fine chocolate between them. Freeze each band until a fingertip leaves no mark before adding the next. That pause is the step that decides the dish.