Louisiana Creole cuisine sauce or soup thicker." The fat and flour are cooked together on the stovetop until the mixture reaches a certain level of brownness, or darkness. Creole roux in New Orleans are known to be lighter than Cajun roux and are usually made with butter or bacon fat and flour. But certain Creole dishes use a dark roux. Dark roux are usually made with oil or bacon fat and flour. The scent of a good roux is so strong that it stays in clothes until they are washed. The scent is so widely recognized in Louisiana that others can tell if
Butter lemon juice. Hollandaise and béarnaise sauces are emulsions of egg yolk and melted butter; they are in essence mayonnaises made with butter instead of oil. Hollandaise and béarnaise sauces are stabilized with the powerful emulsifiers in the egg yolks, but butter itself contains enough emulsifiers—mostly remnants of the fat globule membranes—to form a stable emulsion on its own. "Beurre blanc" (white butter) is made by whisking butter into reduced vinegar or wine, forming an emulsion with the texture of thick cream. "Beurre monté" (prepared butter) is melted but still emulsified butter; it lends its name to the practice of "mounting"