INGREDIENTS
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12 oz dry elbow macaroni
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1 cup gruyere cheese, shredded
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1 cup cheddar cheese, shredded
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10 slices American cheese, chopped
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1 (12 ounce) can evaporated milk
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1 1/2 cups milk
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1/2 teaspoon dry mustard
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1/4 teaspoon salt
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1/4 teaspoon black pepper
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Pinch of cayenne pepper (optional)