The noble rot. The fungus which develops on grapes in certain areas, causing them to shrivel and wither, concentrating the sugar and flavour. Grapes so infected produce a very fine, and expensive, wine. Wines so infected include Trockenbeerenauslese and some Beerenausleses.
Chestnut. To peel chestnuts the hard outer skins need to be slit and then the chestnuts roasted or grilled until these skins crack. They can then be peeled off and the chestnuts boiled for ten minutes, after which it should be relatively easy to rub off the inner, papery brown skin.