Cream puff, or Bánh Xu Kem in Vietnamese, is a delightful pastry that is loved for its light and airy texture and creamy filling. Bánh Xu Kem consists of a hollow pastry shell made from choux dough, which is baked until it puffs up and develops a crisp outer layer. The dough is typically made from flour, butter, eggs, and water, creating a light and delicate pastry.