Poularde Princesse

Poularde Princesse (poached pullet with asparagus, truffle, and potato croustades) teaches one hard little rule about finished butter: the asparagus-head butter goes into the Allemande off the heat, always. Boil it afterward and the sauce loses its fresh green character, while the butter can separate from the yolk-thickened sauce. Keep that final heat under control and the dish becomes composed rather than complicated.

The book expected a saucier beside the poacher, stock never off the fire, and a salamander with a drying box to keep the garnishes ready. At home, a narrow stockpot, one saucepan, and a low oven do their work; four croustades form the ring for four people instead of filling a brigade platter. The separate stations and holding cupboards are scaffolding and can go. Gentle poaching, true Allemande, mushroom essence, asparagus-head butter, and the filled croustades are the dish and must stay. One cook, one stove, one evening.

When it arrives, the poularde is tender and ivory beneath a glossy sauce with a quiet green cast, surrounded by crisp potato shells, bright asparagus, and dark slips of truffle. The decisive move comes last: take the Allemande off the fire, then whisk in the asparagus-head butter. Have the bird, croustades, tips, and platter ready before that moment.