Devilled Sauce

Sauce diable (devilled sauce) teaches the discipline of measured reduction. The one true thing to know before touching the pan is that reduce to two-thirds means leave two-thirds behind, not boil away two-thirds. Misread that instruction and the wine turns severe, the half-glaze becomes sticky, and no quantity of cayenne can restore the sauce's balance.

The original kitchen assumed a saucier at the stove and a stockpot never off the fire, so finished half-glaze was simply waiting to be used. At home, begin with prepared half-glaze, replace the dedicated sauce station with one wide saucepan, and exchange muslin for a fine sieve lined with damp cheesecloth. The brigade's service vessel becomes a six-quart pan, and the batch stops at about two quarts, enough to divide among several home meals. One cook, one stove, one evening.

Nothing else has been invited into the pan. No mustard, vinegar, herbs, or finishing butter, because this particular Sauce diable builds its character exactly as the source sets it down: shallots, white wine, half-glaze, and cayenne, in that order. The dedicated saucier is scaffolding and can go; the two measured reductions are the dish and must stay. Mark both levels before the liquid begins to fall.