Roux making tip... Roux is around 50:50 flour to oil mix. If you mix the flour and oil together when the oil is cold, you have to stir constantly or it can burn. I like to heat up the oil till it's about to or beginning to smoke. Then I add the flour and quickly whip it into the oil. It turns peanut butter color almost immediately. Not much cooking the roux after that...saves a lot of stirring.