the major component in mayonnaise (oil) is forced to be fine droplets to disperse throughout the lesser amount of continuous aqueous phase (dispersed medium). Mayonnaise is known as an oil-in-water (o/w) emulsion.
oil, emulsifier (egg yolk prescribed in some countries), vinegar (as pH regulator and as flavor), spices, flavors (sugar, salt, mustard…) and stabilizers (thickeners for mayonnaise with <70% oil only).
