flour
pan juices
cold water

Allow 1-2 tablespoons flour for every cup of liquid. 

1. Blend the flour with ½ cup cold water.

2. Be sure the paste is very smooth. 

3. A fork works well for this, or shake together in covered jar. 

4. Stir the flour mixture slowly into the hot liquid stirring constantly. 

Simmer 5 minutes.