Cervelle à la Maréchale

Cervelle à la Maréchale (calf's brains in a fine crumb coat with truffle and asparagus) teaches that contrast must be built before the pan gets hot. The brain must first be gently poached until set, then thoroughly chilled and dried. Warm, damp brain tears under the fingers and sheds its coating; cold brain slices cleanly and keeps crisp crust against its soft centre.

The old entry assumes a brigade has already soaked and poached the brains, prepared Anglaise (for Egg-and-bread-crumbing) (No. 174), clarified butter, trimmed asparagus, and sliced truffle waiting at the station. It needs neither a saucier nor stock never off the fire, and a salamander would add nothing because the crust belongs to the skillet. This home version adds the necessary cleaning and poaching, replaces the brigade's hot cupboard with a low oven, and reduces the platter to four servings. That advance service is scaffolding. The one-third-inch slices, fine crumbs, clarified butter, truffle on every piece, and asparagus at the centre are the dish, and they stay.

When it lands on the table, the coating should be evenly golden and crisp beneath the fork, the brain inside almost custard-soft, with earthy truffle and green asparagus cutting through the butter. Cold, dry brain before it meets the flour: that is the step that decides the dish.