NOTE: You may (in an emergency) substitute 1/2 tsp of ground anise for each crushed star anise. Wipe the meat with a damp cloth and place in a heavy plastic food storage bag. Place the bag in a large bowl. Mix the soy sauce, molasses, chinese oyster sauce, star anise, garlic and bourbon. Carefully pour into the bag and around the meat. Seal the bag and refrigerate 3 to 8 hours (the longer the better). Preheat the oven to 350 degrees. Remove the meat from the marinade and place on a roasting rack in a roasting pan. Roast until a meat thermometer inserted in the center of the roast indicates 170 degrees (about 1 3/4 hours). Remove the roast from the oven and allow to stand for 30 minutes before carving. Carve into very thin slices. Serve warm or at room temperature with hot (chinese style) mustard, rice or noodles and stir fried snow peas.