Knowing how to make a roux is one of the fundamental techniques of preparing sauces, casseroles, chowders, and more. It's an incredibly versatile tool that is the base for so many delicious recipes! Whether you're thickening a gumbo, enriching a gravy, or crafting a creamy béchamel sauce, mastering the art of roux opens the door to a world of rich, comforting flavors. In this guide, we'll explore the three types of roux, their uses, and some expert tips on how to make them.