Chou(x) pastry, paste, or ough (French pâte à choux, German Brandteig) is a light pastry dough used to make profiteroles, croquembouches, eclairs, French crullers, beignets, Indonesian kue sus, and gougères. It contains only butter, water, flour, and eggs. Its raising agent is the high moisture content, which creates steam during cooking, puffing out the pastry.