INGREDIENTS
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1 lb Elbow Macaroni
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4 tbsp butter
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4 cups water
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2 tsp dry ground mustard
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2 tsp kosher or sea salt (+ more to taste)
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1/2 tsp black pepper
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1 cup evaporated milk
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8 oz sharp cheddar cheese
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8 oz monterey jack cheese
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1/2 cup parmesan cheese