2 tablespoons unsalted butter
5 ounces small diced onion (approximately 1 cup)
5 ounces small diced carrot (approximately 1 cup)
5 ounces small diced celery (approximately 1 cup)
1/2 teaspoon salt for sweating vegetables, plus more if needed at end of cooking
3 tablespoons all-purpose flour
1 quart chicken broth, heated to a simmer
1 tablespoon minced garlic
1 bay leaf
1 cup heavy cream
10 ounces Fontina, shredded
1 teaspoon Marsala wine
1 teaspoon Worcestershire sauce
1/2 teaspoon hot sauce
1/2 teaspoon white pepper