Beurre Blanc

Beurre blanc (French for “white butter”) is a refined French emulsion sauce, a classic of haute cuisine, especially in pairing with fish and seafood. Despite its exquisite taste, it has a remarkably simple composition.

The base of the sauce is a reduction: dry white wine with finely chopped shallots and wine vinegar is cooked down until the liquid has almost fully evaporated. Then, off the high heat, cold butter is gradually whisked into this concentrated base, piece by piece. The butter, melting gradually, does not separate but forms an emulsion — a tender, silky, creamy pale-yellow sauce. The secret lies in precise temperature control: a sauce that is too hot “splits.” Beurre blanc is served warm; it melts in the mouth and underscores the taste of delicate dishes.