Brush bok choy leaves with marinade. To skewer the leaves, fold the sides of each leaf in toward the middle & roll up the leaf, starting at the top. Thread the leaf packet onto wooden skewers alternately with the mushrooms, tofu, daikon & bok choy stem. On a closed grill, grill the skewers for 12 to 15 minutes, turning to cook all sides. Kelly McCune, "Vegetables on the Grill"