Why does milk get rid of spicy taste and not milk?

The spicy sensation is caused by a compound called capsaicin, which is found in chili peppers. When capsaicin comes into contact with the taste buds on your tongue, it binds to receptors and triggers a signal to the brain that you are experiencing something spicy.

Milk contains casein, a protein that binds to capsaicin and prevents it from binding to the receptors on your tongue. This is why milk can help to neutralize the spicy taste of food.

Other dairy products, such as yogurt and cheese, also contain casein and can be used to neutralize spicy flavors.