Fruit fillings are mixtures made primarily from fruits, often used in desserts like pies, tarts, and pastries. They can be made from fresh, frozen, or canned fruits, and are typically combined with sugar, spices, and sometimes thickening agents like cornstarch or flour. Common fruits used include apples, berries, and peaches. These fillings can be cooked or uncooked, depending on the recipe. Cooked fruit fillings are often simmered to enhance flavors and achieve a thicker consistency, while uncooked fillings maintain the fresh taste of the fruit. Fruit fillings add sweetness and texture to various baked goods, making them a popular choice in many cuisines.