The primary ingredient in mozzarella cheese is milk, specifically the milk from water buffalo or cows. Traditionally, mozzarella is made from buffalo milk, particularly in Italian cuisine, giving it a unique flavor and texture. The process of making mozzarella involves curdling the milk, cutting it into pieces, heating it, and then stretching and kneading the curds to create the cheese's characteristic consistency. Fresh mozzarella is often enjoyed on its own, in caprese salads, or melted on pizzas, making it a versatile ingredient in many dishes.