Saffron Alfredo - cooking recipe

Ingredients

1/4 cup butter
4 white onions, thinly sliced
2 tablespoons minced garlic
2 cups dry white wine (such as Chardonnay)
8 quarts heavy whipping cream
2 tablespoons saffron
1 pinch kosher salt and ground black pepper to taste

Preparation

Melt butter in a very large pot over medium heat. Add onions and garlic; cook and stir until softened and browned, about 20 minutes. Pour in white wine; simmer until reduced by half, 5 to 10 minutes.
Stir heavy cream into the saucepan. Bring to a boil; reduce heat and simmer until reduced by half, about 20 minutes. Stir in saffron. Season sauce lightly with salt and pepper.
Refrigerate sauce until cool and thick, about 1 hour. Spoon into ice cube trays and freeze until solid.