Dairy-based foods are products made from the milk of mammals, primarily cows, goats, and sheep. Common examples include milk, cheese, yogurt, and butter. These foods are rich in essential nutrients like calcium, protein, and vitamins, making them important for a balanced diet. Many dairy-based foods can be enjoyed in various forms, such as sour cream or ice cream. They can be used in cooking and baking or consumed on their own. Some people may be lactose intolerant, meaning they have difficulty digesting lactose, the sugar found in milk, leading to the availability of lactose-free options.