Cacio e Pepe Gnocchi - A Duck's Oven

Ingredients

• 3 medium sized yellow potatoes
• 1 egg
• 1/4 cup grated parmesan
• 1/2 tsp freshly ground black pepper
• 1/2 tsp kosher salt
• 3-4 cups flour
• 2 tbsp butter
• Reserved pasta water
• 1/4 tsp freshly ground black pepper
• Grated parmesan
• Freshly Ground Black Pepper