The Apothecary Butter

A cultured butter built on Escoffier’s Beurre Bercy logic — shallot-lemon-herb-vinegar folded into soft cultured cream — but the vinegar choice shifts the dish from French bistro to Spanish kitchen. The recipe is strict: cultured butter, chalotas, lemon juice, vinagre de jerez (the source of the declared sulphites), parsley, sea salt, lemon zest, pepper and thyme. The Jerez vinegar contributes the oxidative-walnut depth of the solera tradition that white wine vinegar cannot match. Shallot is finely cut; parsley chiffonade-fine; thyme leaves only; the lemon zest delivers the surface citrus oil; pepper is freshly cracked. A pale yellow butter flecked green and amber, with a sustained shallot-citrus-herb sherry aromatic that announces itself as the disc melts onto hot meat or fish.