It is also a damn near magic ingredient for anyone that doesn't have access to pure sodium citrate, and wants a silky smooth cheese sauce that won't break even when you put it in the fridge and reheat in the microwave. Just make your cheese sauce as normal with whatever cheeses you want. Once you've gotten it melted and combined, add a single slice of American cheese. The flavor won't change in the slightest since American cheese has a fairly mild flavor, but the texture absolutely will change to that perfect nacho cheese sauce texture everyone knows and loves.