1 cup water, 6 tablespoons butter, 1 teaspoon salt, 1/8 teaspoon pepper, 1 cup flour, 4 eggs, 1 cup finely chopped gruyere cheese. Combine water, butter, salt and pepper in saucepan. Bring to a boil. Add flour all at once. Cook until mixture forms a ball and leaves the side of the pan, stirring constantly. Remove from the heat. Beat in the eggs 1 at a time. Set aside 2 tablespoons of the cheese. Stir in remaining cheese into the dough. Arrange rounded tablespoonfuls of the dough on greased baking sheet, sprinkle with remaining cheese. Bake at 425° for 20 minutes or until puffed and golden brown. Place on rack to cool.