Following is the classic recipe for the pate a choux dough. It can be used for other traditional desserts as well, such as profiteroles, croquembouche, or gougères. Choux pastry does not use any leavening agents and instead puffs up because of the steam that is created during baking. Following the recipe and precisely measuring the quantities is key. This recipe is adapted from the first published recipe for éclairs that can be found in the 1844 Boston Cooking School Cook Book by Mrs. D.A Lincoln.