About
Roux is a mixture of flour and fat cooked together and used to thicken sauces. Roux is typically made from equal parts of flour and fat by weight. The flour is added to the melted fat or oil on the stove top, blended until smooth, and cooked to the desired level of brownness. A roux can be white, blond (darker), or brown. Butter, bacon drippings, or lard are commonly used fats. Roux is used as a thickening agent for gravy, sauces, soups, and stews. It provides the base for a dish, and other ingredients are added after the roux is complete.
Best pairings
Ranked across every axis at once: shared flavor chemistry, real-recipe co-use, novel-discovery, and nutrient synergy. Pairs agreeing on two or more axes lead.
Commonly combined
Frequently used together in real recipes — ranked by how specifically these ingredients appear together
Research Evidence
The Geist can be wrong. Some flavor, taste, and pairing values are model-predicted, not lab-measured.