Chemiser (to line or coat) is a fundamental technique in which a mould is lined with a thin, even layer of aspic jelly, farce, or another preparation to create a decorative and functional shell before filling. In cold work (garde manger), chemiser most commonly refers to coating the interior of a mould with a 2-3mm layer of crystal-clear aspic: the mould is set in a bowl of ice, a ladleful of liquid aspic (at the point of setting, around 18-20°C) is poured in, and the mould is rotated slowly and continuously so the aspic coats every surface evenly before setting. This process is typically repeated 2-3 times to build sufficient thickness, chilling between each coat. Once set, decorative elements — tarragon leaves, truffle cutouts, blanched vegetable shapes — are dipped in liquid aspic and pressed against the lined mould in the desired pattern, then sealed with another thin aspic layer. The filling (mousse, parfait, or composed salad) is then spooned in and the mould completed with a final aspic seal. In hot preparations, chemiser applies to lining terrines with bard (thin pork back fat) or caul fat (crépine), or coating ramekins with butter and breadcrumbs for soufflés. For Charlotte Royale, the mould is chemisé with thin slices of Swiss roll arranged in a spiral pattern. The technique requires precise temperature control: aspic too warm slides off, too cold sets in lumps. The mould must be scrupulously clean and grease-free for aspic to adhere properly. A well-chemisé mould produces an unmoulded piece with a flawless, mirror-smooth surface that showcases both technical skill and artistic sensibility.
Even coating thickness throughout the mould. Aspic applied at point-of-set temperature (18-20°C). Multiple thin layers preferred over one thick layer. Moulds must be scrupulously clean and grease-free. Decorative elements sealed between aspic layers.
Keep a bowl of ice water next to your work station and rotate the mould directly over it. Test aspic readiness by dripping a small amount onto a chilled plate — it should set within 15 seconds. For hot preparations, chill butter-lined moulds for 10 minutes before adding the breadcrumb coating for better adhesion.
Aspic too warm, sliding off the mould surface. Applying too thick a layer that cracks when unmoulded. Mould not cold enough, preventing aspic from setting. Decorative elements not sealed with aspic, floating loose. Rushing the process and not allowing each layer to set fully.
Le Guide Culinaire (Escoffier)