Answer:
Firstly, Mayonnaise is not a dairy product. It contains eggs, but no milk.
Dairy products include: Milk, Cream, Butter, Sour Cream, Cheese, Buttermilk, Creme Fraiche, Clotted Cream, Kefir, Condensed and Evaporated Milk, Powdered Milk, Yogurt, Gelato, Ice Cream, the list goes on...