Microwave Brown Roux

Directions

1. 1
   In a 1-quart microwave-safe measuring cup or souffle dish whisk together vegetable oil or rendered fat and flour until combined well.
2. 2
   Microwave roux, uncovered, at high power (100%), whisking at 2-minute intervals, 8 minutes.
3. 3
   If roux is not the dark reddish-brown color of chestnut shells, microwave at high power, whisking and checking color at 1-minute intervals, until roux reaches desired color.
4. 4
   Roux may be made 1 week ahead, cooled completely, and chilled, covered.
5. 5
   Reheat roux before using.