Pie is a baked dish typically consisting of a pastry crust filled with sweet or savory ingredients. Common fillings include fruits like apples or cherries, custards, or meats and vegetables. Pies can be served hot or cold and are often enjoyed as desserts or main courses. There are many types of pies, such as apple pie, pumpkin pie, and shepherd's pie. The crust can be made from various types of dough, and pies can be topped with additional crusts or meringue. Pies are popular in many cultures and are often associated with celebrations and holidays.