Vinaigrette Classique — French Oil and Vinegar Dressing

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Classical French vinaigrette is a temporary emulsion of oil dispersed in vinegar, stabilised only by vigorous whisking and the viscosity of a quality mustard. The canonical ratio—three parts oil to one part vinegar—is a starting point, not a rule; the saucier adjusts acidity to complement the dish. Red wine vinegar yields assertive dressings for frisée aux lardons. Sherry vinegar brings nutty warmth to roasted beetroot. Champagne vinegar offers the delicacy required for a butter lettuce and chervil salad. Dijon mustard, added at the outset, acts as an emulsifier through its mucilage content, suspending oil droplets long enough to coat leaves evenly. The whisk technique matters: a rapid figure-eight in a bowl tilted at 30 degrees creates finer droplets than casual stirring. Season with fine sea salt dissolved in the vinegar first—salt dissolves poorly in oil. Freshly ground white pepper avoids the visual distraction of black specks on pale leaves. The finished vinaigrette should cling to a lettuce leaf without pooling, taste bright without puckering, and carry enough oil to give body without greasiness. A properly made vinaigrette separates within minutes; this is correct and expected. Whisk again at service. Temperature matters: a vinaigrette at 18°C coats better than one straight from refrigeration. For warm vinaigrettes, deglaze the sauté pan with vinegar, whisk in mustard off heat, then stream in oil—the residual fond adds depth no cold preparation can match.

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