-none actually) Combine burger stuff, shape into 4-6 burgers. Drain chopped cucumber; mix in remaining ingredients; reserve. Just before serving, heat grill and brush with oil. Cook burgers and 4 minutes per side, turning once. Makes 4-6 servings. (If lemon grass is very dry, soak 20 minutes before using. If you cannot find lemon grass, use 1 tsp. grated lemon peel.)