Anyways, the thing I love about eclairs, and profiteroles, is the number of variations you can do...but so rarely see. I mean, who wouldn't love a banana split eclair with a banana cream and garnished with chopped walnuts, whipped cream and a cherry? I'm going off on a tangent, so focus, Eric.
Pate a choux is the name of the parent dough that is used to make eclairs, profiteroles and croquembouche (Note to self, try that sometime). The dough is partially cooked in a pan, when the flour is added to the liquid ingredients and then later mixed with eggs. The end result is an emulsion basically, a very "wet" dough that uses the moisture as a leavening agent. When the dough is initially baked at a high temperature, the water turns to steam and puffs up the dough which is then set, the temperature is then lowered to dry out the dough.