Roux Roux Roux () is 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. Butter, vegetable oils, 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. The fat is most often butter in
Fat content of milk as "nonfat" milk, due to USDA regulations stating that any food with less than ½ gram of fat per serving can be labelled "fat free". In the U.S. and Canada, a blended mixture of half cream and half milk is called half and half. Half and half is usually sold in smaller packages and used for creaming coffee and similar uses. Three main varieties of milk by fat content are sold in the UK, "skimmed", "semi-skimmed" and "whole milk". Semi-skimmed is by far the most popular variety, accounting for 63% of all milk sales. Whole milk follows with 27% and