Roux is a cooked mixture of flour and a cooking fat, like vegetable oil, that is used to thicken sauces and gravies.
Do you know Roux is also known as Panada or Rue? Roux is a mixture of flour and fat cooked together. Roux is used as a base for many sauces. Equal quantity of flour and fat is used to make roux. Watch the video, to know the technique involved in making a classic roux.