Ingredients: Kosher salt 6 oz dry elbow macaroni (about 1 1/4 cups) 1 tsp neutral vegetable oil 2 oz grana padano, shredded (I used parmesan) 2 oz Jarlsberg, shredded 6 oz white cheddar, shredded 2 cups heavy cream Sea salt Instructions: In a medium saucepan, bring 2 quarts water and 1 ½ tablespoons kosher salt to a boil. Add the macaroni and return to a boil; once boiling, cook until barely al dente (about 5 minutes), then drain the pasta well. Transfer to a rimmed baking sheet and mix in the oil to keep the noodles from sticking. Let cool completely. You should have about 3 cups. Set a rack in the oven about 4 inches from the broiler and preheat the broiler. Combine the grana padano, Jarlsberg, and white cheddar in a large bowl; reserve 60 percent of the cheese for the top. In a large deep saucepan, bring the cream and 1 teaspoon sea salt to a boil. Let simmer for about 2 minutes. The cream will foam up and then subside into a simmer. Add the noodles and cook, stirring occasion...