Score loin in 1-inch diamonds with a sharp knife (only 1/4 inch
Combine remaining ingredients and marinate pork roast in a plastic
bag at least 2 hours to overnight in refrigerator.
Remove pork from marinade; heat remaining marinade in a saucepan
to a boil and reserve for basting.
Grill pork over indirect, medium-low fire, or roast at 350 degrees
F, to an internal temperature of 145-150 degrees F (about 1 1/2
to 2 hours or 18 minutes per pound). Baste meat with marinade during
last 5 to 10 minutes of cooking.
Remove, cover with foil and a kitchen
towel and rest 10 minutes before carving. The meat should show a
slight blush tone and the juices run clear.