1.   I used some cornstarch to thicken the gravy.

2.   I thickened the gravy with flour.

3.   Cook over low heat until gravy is thickened.

4.   Horns and backup singers thicken the gravy.

5.   Thicken the gravy, if desired, with a little flour mixed with water.

6.   To thicken the gravy, make a roux with equal amounts of unsalted butter and flour.

7.   Season with salt and sugar, and thicken gravy with cornflour.