Éclairs are a French pastry made from choux pastry dough. They have an elongated shape and are baked until they become crisp and hollow inside. The pastry shells are then filled with a creamy filling, such as pastry cream or whipped cream. Éclairs can be flavored with various options like vanilla, chocolate, coffee, caramel, or fruit-infused creams. They are often topped with a glaze, typically made from melted chocolate or icing sugar. Éclairs are enjoyed as a delicious treat or dessert, known for their crispy texture and rich, flavorful filling.