The spongy tofu you are talking about is koya-dofu, this is a speciality that was actually created by monks living on Mt. Koya centuries ago, it is a freeze dried tofu that is then reconstituted, it may take some getting used to but it is wonderful! there is some more on it in the soy class I did on the eGCI: http://forums.egullet.org/index.php?showtopic=44086 The Japanese word for chestnut is kuri but when it is used in sweets they use the French pronunciation of marron, thus it is easy to confuse it with melon... $400 mushrooms, sorry but that is way out of my price range!