I found this recipe in Taste of Home, February/March 2003, and modified it to fit our ingredients on hand and to stretch it by adding more pork.
In a small bowl, combine the first five ingredients until blended; set aside.
In a large skillet, brown pork in oil on all sides. Stir in the gravy mixture, mushrooms and leek. Bring to a boil.
Reduce heat; cover and simmer for 10-15 minutes or until meat juices run clear and vegetables are tender. Serve over rice.