Spaghetti Cacio e Pepe

Name: Authentic Spaghetti Cacio e Pepe Recipe
Prep time: 15 min
Cook time: 15 min
Yield: 2
Cuisine: Italy
Ingredients: 12 oz (340g) Spaghetti (or Tonnarelli/Rigatoni); 2 cups (200g) Pecorino Romano cheese, finely grated; 2 tablespoons whole black peppercorns; 1 tablespoon coarse sea salt (for pasta water); 1/2 cup reserved starchy pasta water (approximate, use as needed)