How is fat removed from milk?

Lactose is present in milk. By substituting other food for milk like egg etc can remove lactose from our diet.

More information:

Lactose is the sugar that is present in all dairy products. It cannot be removed from those products. Instead, persons who are "lactose intolerant" must avoid all dairy products and all foods that contain dairy products as ingredients. Soy milk, almond milk, rice milk and coconut milk are all readily available at supermarkets and make Excellent substitutes for dairy milk.