Pâte À Choux is a light pastry dough used in various French desserts. It is made from a mixture of water, butter, flour, and eggs, which creates a unique texture that puffs up when baked. This dough is versatile and can be used to make treats like éclairs, profiteroles, and choux cream. The preparation involves cooking the flour and butter mixture on the stove before adding eggs to form a smooth batter. Once piped onto a baking sheet, the dough expands in the oven, resulting in a hollow center perfect for filling with creams or custards.