Eclairs are a type of pastry made from choux dough, which is light and airy. They are typically filled with a creamy custard or whipped cream and topped with a layer of chocolate icing. The dough is piped into long shapes and baked until golden, creating a hollow center perfect for filling. These delightful treats originated in France and are popular in many countries around the world. Eclairs can be enjoyed as a dessert or a sweet snack, and they come in various flavors, including vanilla, chocolate, and coffee, making them a versatile choice for pastry lovers.