For best results, thaw unopened bag(s) of Pioneer Frozen Gravy under refrigeration overnight prior to use. Fill a large pot with water and bring to a boil. Place thawed, unopened bag(s) of frozen gravy into boiling water. Boil bag(s) for approximately 30 minutes or until gravy reaches internal temperature of 165°F-175°F. Note: Heating time will vary depending on the number of bags in water. Remove unopened bag(s) from the boiling water. Caution: The gravy will be extremely hot, do not handle with unprotected hands. Once removed from boiling water, cut the top off of the bag and pour the contents into a holding container and hold at 165°F-175°F. Stir periodically as heat may bring moisture to the top of the gravy. Microwave Heating Instructions: Slack frozen gravy under refrigeration overnight. Cut a corner of the bag(s) making a small opening for steam to escape. Microwave 15 minutes or until sausage gravy reaches 165°F-175°F. Note: Higher wattage microwave (4000 WATTS) will require less heating time. Once removed from microwave, cut the top off of the bag and pour the contents into a holding container and hold at 165°F-175°F. Stir periodically as heat may bring moisture to the top of the gravy. Note: If the bag(s) of gravy are frozen, follow the same heating procedures and temperatures, but extend the heating time approximately 20 minutes.