酥皮, also known as puff pastry, is a light and flaky pastry made from layers of dough and butter. The dough is rolled and folded multiple times to create thin layers, which puff up when baked due to steam. This technique results in a delicate texture that is perfect for both sweet and savory dishes. Commonly used in various cuisines, 酥皮 can be found in items like 法式千层酥 (French mille-feuille) and 肉馅饼 (meat pies). Its versatility allows it to be filled with ingredients such as fruits, creams, or meats, making it a popular choice for pastries and appetizers.