In a coverable storage container (or zip-top plastic freezer bag), COMBINE the ten marinade ingredients; ADD pork roast; COVER/SEAL; CHILL for 8 hours; TURN occasionally.
REMOVE pork from marinade; RESERVE marinade.
LINE a shallow roasting pan with aluminum foil; PLACE rack in pan; PLACE pork on rack.
BROIL pork 6 inches from heat element for 5 minutes; REDUCE oven to 325°; optionally, POUR about 3/4 cup water in bottom of roasting pan (for a juicier roast).
BAKE roast at 325° until internal temperature of roast is 155°, about 1 to 1 1/4 hours.
Meanwhile, in a small saucepan, WHISK cornstarch into reserved marinade; over medium high heat, bring sauce to BOIL; WHISK constantly until thickened, about 3 minutes; SET aside.
REMOVE a couple of tablespoons of the sauce; use to BASTE roast; BAKE another 15 minutes.
REMOVE from oven; allow to REST for 10 minutes before slicing; SERVE with remaining sauce.
Per Serving (excluding unknown items): 610 Calories; 34g Fat (52.4% calories from fat); 43g Protein; 26g Carbohydrate; 1g Dietary Fiber; 141mg Cholesterol; 728mg Sodium. Exchanges: 0 Grain(Starch); 6 Lean Meat; 1/2 Vegetable; 3 Fat; 1 1/2 Other Carbohydrates.