In a food processor, combine the first eight ingredients. Cover and process until combined. Pour into a large resealable plastic bag; add the pork. Seal bag and turn to coat. Refrigerate for 8 hours or overnight., Drain and discard marinade. Place roast on a rack in a roasting pan; pour 2 cups water into pan. , Bake, uncovered, at 450° for 1 hour. Reduce heat to 400°. Bake 1-1/2 to 2 hours longer or until meat is tender, adding more water to the pan as needed. Let stand for 15 minutes before slicing.