How to Make It
Preheat the oven to 400°. In a medium saucepan, combine the milk, butter and salt and bring to a boil over high heat. Add the flour all at once and stir vigorously with a wooden spoon over moderate heat until the dough forms a ball. Stir for 1 minute to slightly dry out the dough.
Transfer the dough to a stand mixer fitted with the paddle and let cool slightly for 2 minutes. With the machine at medium speed, beat in the eggs, 2 at a time, beating well between additions. Mix in the crème fraîche and then the cheese.
Line 2 large baking sheets with parchment paper. Fill a pastry bag with the dough and pipe out 1 1/2-inch mounds about 1 inch apart on the prepared baking sheets. Bake the gougères in the center of the oven for 20 minutes. Turn the oven down to 350° and bake until the gougères are golden brown and puffed, about 8 minutes longer. Transfer to a rack to cool slightly. Serve the gougères warm or at room temperature.