1, mayonnaise is a kind of flavored oil, by edible vegetable fats, vinegar, fruit juice, egg yolk, egg white, salt, sugar, vanilla, chemical seasoning, acidity and other raw materials. Mayonnaise is a very wide range of mayonnaise, is the production of Western cuisine dishes and pastries, one of the basic ingredients.

2, salad dressing is a food, by vegetable oil, egg yolks and brewing vinegar, plus seasonings and spices and other modifications. Salad dressing is a "green food".