Vietnamese Grilled Beef

½ tsp freshly cracked black pepper
1½ tsp sugar
2 cloves garlic, minced
2 T oyster sauce
1 tsp Thai fish sauce
1 T soy sauce
1 lb sirloin tips, cut into cubes or strips

In a medium bowl, combine all ingredients, except beef, and whisk until well-blended. Pour over beef and stir until beef is well-coated. Marinate in the refrigerator for at least 2 hours, or up to a day. If using beef strips, place on grill and turn with tongs. Cubes may be placed directly on the grill or on shish kabob skewers. Grill until desired doneness is reached.