Bombe Jeanne d’Arc

Bombe Jeanne d’Arc (a vanilla ice-cream dome filled with chocolate-praline pâte à bombe) teaches temperature before anything else. Pâte à bombe, a hot-syrup yolk foam, gives the centre its fine, rich texture, but the chocolate must melt into that base while it is still warm. Add it after the base has gone cold and it tightens into black grit.

The brigade formula assumed a pâtissier’s station, prepared vanilla ice cream waiting in quantity, a deep freezer, and a proper hemispherical bombe mould. For one cook, one stove, one evening, good full-fat vanilla ice cream and a chilled 1.5-litre stainless-steel bowl are the honest equivalents. Making a separate batch of ice cream is brigade scaffolding and can go; clothing the mould, building the pâte à bombe, and freezing the filled dome absolutely stay, because those steps are the dish.

Turned out, the bombe should be smooth and ivory outside, with a clean, dark centre scented by caramelized nuts. The moment that decides it comes when the pâte à bombe falls from the whisk in warm ribbons. Have the chocolate finely chopped and waiting before you cook the syrup.