"To create a mac and cheese with the silky consistency of Velveeta, but using a flavorful, aged cheddar, chefs and brothers Bryan and Michael Voltaggio add sodium citrate to bind their cheese sauce. “Sodium citrate will be your new best friend for cheese sauces,” says Bryan. “It gives you that creamy, melty, gooey texture, but with nutty, sharp cheeses that don’t typically melt smoothly.” Think of the nacho cheese possibilities! Slideshow: More Macaroni and Cheese Recipes..."