Beurre manié Beurre manié Beurre manié (French "kneaded butter") is a dough, consisting of equal parts of soft butter and flour, used to thicken soups and sauces. By kneading the flour and butter together, the flour particles are coated in butter. When the beurre manié is whisked into a hot or warm liquid, the butter melts, releasing the flour particles without creating lumps. Beurre manié should not be confused with roux, which is also a thickener made of equal parts of sometimes clarified butter or many other oils and flour, but which is cooked before use. Beurre manié is also used as
Beurre blanc vinegar, and stock can be added as well. Cold, one-inch cubes of butter are then gradually incorporated into the sauce as the butter melts and the mixture is whisked. The sauce can separate by either overheating or cooling. If it heats past 58 °C (136 °F), some of the emulsifying proteins begin to break down and release the butterfat they hold in emulsion. If the sauce cools below 27 °C (80 °F), the butterfat will solidify. Beurre rouge (English: "red butter") is a variant of the beurre blanc sauce that is prepared by substituting a dry red wine for the