Source: Recipe by Kaspar Donier, Kaspar’s, Seattle WA
2 cups heavy (whipping) cream
1/4 teaspoon dried red pepper flakes, or more to taste
1/4 teaspoon salt
1 cup asiago cheese, grated, divided
Combine the cream, red pepper flakes, salt, and 3/4 cup of the cheese in a heavy saucepan. Place over medium heat and stir until the cheese is melted and the sauce is smooth.
Sprinkle the remaining cheese on top of the finished dish.