Definition
"Mayo" is simply the short, casual term for mayonnaise. It refers to the same thick, creamy sauce made from oil, egg yolk, and an acid like vinegar or lemon juice. Think of it as the everyday nickname for mayonnaise. It's used in sandwiches, salads, and as a condiment, just like its full-named counterpart. It provides a familiar creamy texture and flavor. It is a staple condiment and base for sauces.