In a cast iron pot, over medium heat, stir flour and oil until constantly until desired color is reached. It should be a rich brown.
Oven method to make roux:
In a baking dish, place 2 cups flour
Bake in oven at 350° stirring every 5 minutes until flour is medium golden brown
Store in airtight container.
When roux is needed, remove desired amount, add oil , heat until blended stirring constantly. If darker roux is desired, continue cooking.