Gougères

Name: Gougères (French Cheese Puffs)
Cuisine: French
Ingredients: handful chives or green onions (to yield 3 to 4 Tbsp); handful chives or green onions (to yield 3 to 4 Tbsp); 8 oz (250 g) chilled sharp Gruyère or cheddar cheese (2 cups grated); 8 oz (250 g) chilled sharp Gruyère or cheddar cheese (2 cups grated); 6 Tbsp butter or margarine; 6 Tbsp butter or margarine; 1 cup water; ½ tsp salt; 1 cup flour; 4 eggs; 1 tsp dry mustard; ¼ tsp cayenne