Puffy Pastry is a type of pastry made with a combination of butter, flour, and eggs. It is often used to make popovers, which are light and airy pastries that puff up when cooked. Popovers are usually served as a side dish or dessert and can be filled with various ingredients such as cheese, jam, or chocolate. Puffy Pastry is also used to make other types of pastries such as pies, tarts, and turnovers.