brined ham must be cooked to an internal temperature of
Cook until interior temperature reaches 140 degrees F, approximately 1 hour. Let the roast rest for 1/2 hour before carving. *Cook's note: A city ham is basically any brined ham that's packed in a plastic bag, held in a refrigerated case and marked ready to cook, partially cooked or ready to serve.ent the ham with heavy duty foil, insert a thermometer, and cook for 3 to 4 hours or until the internal temperature at the deepest part of the meat registers 130 degrees F. Remove and use tongs to pull away the diamonds of skin and any sheets of fat that come off with them.