How to make a roux

Melt some butter and put an equal amount of flour in and cook it over a very low flame for as long as you have patience. Neither the flour nor the butter should turn brown. It's important that the flour cook, and not just mix with the melted butter, otherwise it will taste like flour, which is icky. This is just a primer, look at Joy of Cooking or the like for more better info. I'll be adding to this later. [an error occurred while processing this directive]