Ice cream is a frozen food made from dairy products like milk and cream that is typically sweetened and flavored. To make ice cream, the mixture is stirred while cooling to incorporate air and prevent ice crystals from forming, resulting in a smooth, semi-solid foam. The meaning of "ice cream" varies between countries, with some only applying it to specific varieties containing certain quantities of ingredients, while others use one term for all similar frozen dairy desserts. Ice cream is popular around the world, with common flavors like vanilla and chocolate, and non-dairy alternatives also exist.