INGREDIENTS
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4 tablespoons Cabot Salted Butter 1/2 cup sifted King Arthur Unbleached All-Purpose Flour 2 cups milk, heated 2 cups half-and-half or reduced-fat chicken broth, heated 1 1/2 cups Cabot Sharp Cheddar, diced 1/2 teaspoon dry mustard 1/4 teaspoon each s