What technique blends oil and vinegar into a stable mixture in a vinaigrette?

• A. Emulsification
• B. Boiling
• C. Fermentation
• D. Reduction

Answer: (A)

Emulsification is the technique that blends oil and vinegar into a stable mixture. Oil and vinegar don’t naturally mix, so whisking or shaking breaks the oil into tiny droplets that become dispersed in the vinegar. This creates a suspension rather than separate layers. Using an emulsifier like mustard, lemon juice, or egg yolk helps the droplets stay suspended longer, giving a more stable vinaigrette. Boiling would heat and change flavors, fermentation involves microbes transforming ingredients, and reduction concentrates flavors by cooking liquid away—not by mixing two immiscible liquids.