There are several ways that you can remove the excess fat from the top of the sauce. 1. Use a spoon to skim the fat off of the top of the sauce. 2. Use a slice of bread to absorb the fat by laying the bread gently on the top of the sauce. 3. Let the sauce come to room temperature and spoon the coagulated fat off the top. 4. Place the sauce in the refrigerator and allow the fat to harden making it easy to remove.