Making a Roux

Making a roux is the foundation of classic French cuisine, transforming equal parts fat and flour into a thickening agent for bechamel, veloute, and espagnole sauces. This technique is simpler than (Sous Vide) because it relies on heat control, not expensive equipment. Burn the flour, and the entire batch turns bitter; undercook it, and the result tastes pasty and raw. By mastering the roux, you unlock the five mother sauces, each requiring a different cooking time for the color and flavor depth, from 130°F for white roux to 350°F for dark. Professional chefs execute this reliably because they understand the precise chemical change when starch granules absorb fat and gelatinize.