Mayo, short for mayonnaise, is a thick, creamy condiment made primarily from egg yolks, oil, and vinegar or lemon juice. It is commonly used in sandwiches, salads, and dressings, providing a rich flavor and smooth texture. The process of making mayo involves emulsifying the oil with the egg yolks, which helps to create a stable mixture. While traditional mayo contains raw eggs, many commercial versions use pasteurized eggs or egg substitutes for safety. It can also be flavored with various herbs and spices to enhance its taste.