Mayonnaise is a thick sauce. It is an emulsion of vegetable oil and egg yolk, with either lemon juice or vinegar. It is often used as a condiment for food such as salads, sandwiches and french fries.
Mayonnaise is prepared using several methods, but on average it contains around 700 kilocalories (2,900 kJ) per 100 grams, or 94 kilocalories (Cal) per tablespoon. This makes mayonnaise a calorically dense food.