1/2 cup dry white wine
1/2 cup water
8 tbsp unsalted butter, cubed
1 tsp sugar
1/2 tsp kosher salt
1 cup all-purpose flour
4 large eggs
2 cups grated Gruyère
1/2 cup grated Parmigiano-Reggiano
1/2 cup pancetta, sautéed and finely chopped
1/4 cup chives, finely chopped
Preheat oven to 400 degrees Fahrenheit. Line two baking sheets with parchment paper and set aside. In a medium saucepan, heat wine, water, butter, sugar, and salt over medium-high heat, until butter is completely melted. Remove from the heat and add cup of flour, stirring vigorously with a wooden spoon until the flour is fully incorporated and the dough pulls away from the sides of the pan, about 2 minutes. Carefully transfer the dough to a stand mixer. Beat on medium speed for 60 seconds, to cool down. Then beat in the eggs, one at a time. Add grated cheeses, pancetta, and chives. Place rounded tablespoons of dough onto prepared baking sheets, leaving 2 inches between each, as they will expand during baking. Bake for 10 minutes, then reduce oven temperature to 325 degrees Fahrenheit and bake for an additional 15 minutes, until the gougères are golden brown and cooked through to puffy perfection.