Raspberry Sauce

Sauce aux framboises (raspberry sauce) teaches restraint with starch. The jelly already holds body, sweetness, acidity, and brilliant fruit, so the arrowroot has only one task: help the warm sauce cling without turning it cloudy or pasty. Stop at the first slow bubble. That is the one true thing to know before you touch the pan.

The original formula assumed a saucier with prepared jelly at hand, melting whatever quantity service required and holding it ready for the next plate. At home, measured jars, a four-quart saucepan, and a batch of about two quarts give you the same intent for one cook, one stove, one evening. The holding pot and repeated last-minute melting were brigade scaffolding, so they go. Melting the jelly gently, binding it slightly with arrowroot, and adding kirsch at the end are the dish itself, and they remain in that order.

Finished properly, the sauce is vivid garnet, clear enough to catch the light, and fluid enough to fall from a spoon in a satin ribbon. The moment that matters is the arrowroot: whisk it in cold, heat it only until the sauce lightly coats the spoon, then stop.