How to Make It
Cut roast into 8 (1-inch-thick) pieces, and place in a large shallow dish or large zip-top plastic freezer bag.
Stir together chopped onion, minced garlic, and next 8 ingredients; pour over pork. Cover or seal, and chill at least 2 hours, turning occasionally. Remove pork from marinade, discarding marinade.
Grill pork, covered with grill lid, over medium heat (300º to 350º) 20 minutes or until a meat thermometer inserted into thickest portion registers 155º, turning once. Remove from grill, and let stand until meat thermometer registers 160º. Garnish, if desired.
*8 (1-inch-thick) boneless pork chops may be substituted.