Ingredient:

• 6 cups water
• 1-1/2 tablespoons kosher salt
• 8 ounces uncooked long pasta, such as spaghetti, linguine or fettuccine
• 1/4 cup butter, cubed, divided
• 1 teaspoon freshly ground black pepper
• 1/4 cup finely shredded Parmesan cheese, Grana Padano or Pecorino Romano