Combine all ingredients for marinade in plastic freezer bag placed inside bowl. Add pork and mix well. Refrigerate overnight, mixing occasionally. Dipping sauce: Place grated cucumber in colander and sprinkle with salt. Drain 30-60 minutes. Rinse thoroughly and pat dry with paper towels. Mix with remaining sauce ingredients and refrigerate at least one hour. Makes 1 1/4 cups. Thread pork on skewers, reserving marinade. Sear pork over direct heat. Remove to indirect heat and cook 12-20 minutes, turning and basting frequently. Serve with dipping sauce. 6 servings.