Sauce Béarnaise and the Parisian Sauce Canon

Sauce béarnaise — while named for Béarn in the southwest (in honor of Henri IV, the Béarnais king) — was created in Paris at the restaurant Le Pavillon Henri IV in Saint-Germain-en-Laye in 1836 by chef Collinet, and it is a Parisian sauce in every technical sense: an emulsified butter sauce (sister to hollandaise) flavored with a tarragon-and-shallot reduction that has become the most beloved steak sauce in French gastronomy. The construction: a reduction of 60ml white wine vinegar and 60ml dry white wine with 2 minced shallots, 1 tablespoon crushed black peppercorns, and 3 tablespoons chopped tarragon stems (stems for the reduction, leaves reserved for finishing) — reduced to 2 tablespoons of intensely concentrated liquid. This reduction is cooled slightly, 3 egg yolks are whisked in, and the mixture is cooked gently over a bain-marie (never direct heat — the yolks must thicken gradually without scrambling, reaching 65°C maximum) while 250g clarified butter is added in a thin stream, whisking constantly, creating a thick, creamy, pale-yellow emulsion. Finished with 2 tablespoons chopped fresh tarragon leaves and 1 tablespoon chopped chervil. The sauce should coat a spoon thickly, taste of tarragon, shallot, and butter with a sharp vinegar backbone, and be served warm (not hot — excessive heat breaks the emulsion). Béarnaise is served exclusively with grilled or pan-seared red meat (the steak-frites-béarnaise combination is the Parisian bistro's greatest hit), with grilled fish (especially turbot and salmon), and with grilled asparagus. The sauce exists within a family: sauce Choron (béarnaise + tomato purée), sauce Foyot/Valois (béarnaise + meat glace), sauce paloise (mint replaces tarragon — for lamb). These derivatives demonstrate the classical sauce system's combinatorial logic: one master technique, multiple variations through substitution.

• Hollandaise (lemon-butter emulsion)
• Argentine chimichurri (herb sauce for steak)
• Japanese ponzu butter (citrus-butter sauce)
• Italian salsa verde (herb sauce for meat)