Roux is basically an emulsive agent -- butter adds the fat.
I believe you're referring to a roux.
Mornay sauce starts out as a bechamel sauce (a basic roux of flour, milk & butter). Then it is added with a cheese, such as gruyere.
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Actually, a roux is not a sauce, but is the base for several different sauces and is used as a thickener in many dishes. A roux is made by combining equal parts of fat and starch (usually butter or lard and flour) and cooking it in a pan until the flour taste has been cooked out. The color of a roux depends upon the amount of time you cook it - and the darker the roux, the more flavor it imparts to the dish you are using it in. By adding milk to a roux you are making a bechamel sauce which is used in many lasagna recipes and other dishes. Bechamel sauce is also the base sauce for several other culinary sauces: Mornay sauce (cheese sauce), Mustard sauce, and Sauce Soubise (contains finely chopped onions that are sweated in butter before adding to the sauce) are a few of these.
Bechamel sauce is a variety of white sauce made from a roux of butter and flour, to which hot milk is added.
Bechamel sauce is also known as white sauce. In a pan, you melt some butter. You then mix in some flour to make a paste called a roux. Milk is then added and the roux blended in and brought to a boil. The flour thickens the sauce.
When making a roux, especially a dark roux it is best to use oil instead of butter.
Is called a bechamel sauce or a roux.
A roux is a mixture of equal quantities of butter and plain flour blended together. Small dollops can then be dropped into hot liquids (including tomatoe sauce). Stir till the liquid boils and thickens. More roux can be added at any time
It means Ginger in french and has also other meanings [Quote]
French Sauces are usually stock or wine reductions with a little cream or butter added at the end.There is also the béchamel sauce, this basic French white sauce is made by stirring milk into a butter-flour roux.
Sauce Cardinale is a derivative of Bechamel, which is a classic French roux-thickened milk sauce. The Bechamel is seasoned with cayenne and truffle oil, and finished with lobster butter. I have seen tomato product (paste) used in some cases as well.