Kitchen

Shells, heads and the paste inside the head, browned hard in fat, deglazed, extracted into water and reduced until dense enough to season a dish with. It is the defining move of the bisque family and the reason a bisque tastes of shellfish in a way that a soup with shellfish in it never does.

Bringing already-cooked crustacean meat to serving temperature without applying enough heat to cook it further. Buying cooked head-on shrimp is often the better purchase — intact shells and heads for stock, boiled fresh at the counter rather than frozen raw — and the only cost is that the final heating has to be handled with real discipline.

Tempering gradually raises cream's temperature by whisking in small amounts of hot sauce before combining in full volume — avoiding the thermal and pH shock that causes cream to visibly split or curdle. A few seconds of care that separates a glossy, unified sauce from a broken one.