Pierce meaty parts of pork with fork; place in large plastic bag. Combine remaining 5 ingredients; pour over pork. Press air out of bag; close top securely. Refrigerate 8 hours or overnight, turning bag over occasionally. Reserving marinade, remove pork and place, fat side down, in 20 cm square microwave-safe baking dish. Brush thoroughly with reserved marinade. Cover pork loosely with wax paper. Microwave on Medium-high (70%) 30 minutes, rotating dish once and brushing with reserved marinade. Turn pork over; cover and microwave on Medium-high 30 minutes longer, or until meat thermometer inserted in thickest part registers 70ºC , rotating dish once and brushing with marinade. Remove and let stand 10 minutes before slicing.