Serious Eats: Recipes
Cheese Sauce for Cheese Fries and Nachos
Note: This cheese sauce is gooey and tangy. For a spicier version, substitute half the cheddar cheese with Pepper Jack and add 2-3 minced pickled jalapeños, or to taste.
To reheat the sauce, microwave it on high heat, stopping and stirring every 30 seconds until it's fully melted.