Mayonnaise

Mayonnaise (), colloquially referred to as "mayo" (), is a thick, creamy sauce with a rich and tangy taste that is commonly used on sandwiches, hamburgers, bound salads, and French fries. It also forms the base for other sauces, including tartar sauce, fry sauce, remoulade, salsa golf, ranch dressing, and rouille.

Mayonnaise is an emulsion of oil, egg yolk, and an acid, either vinegar or lemon juice; there are many variants using additional flavorings. The color varies from near-white to pale yellow, and its texture from a light cream to a thick gel.

Commercial eggless versions are available for those who avoid eggs.