Peel away 16 to 20 leaves from the lettuce. If leaves are extremely large, slice in half top to bottom. Place on a serving dish. Set aside in the refrigerator.
Cut and chop the shredded bamboo shoots and the water chestnuts into very fine dice. Combine. Pour enough hot water over the mushrooms to cover. Let stand for 15 to 30 minutes, then drain, squeezing to extr