I'd never heard of chestnut soup until I happened to mention in my language class last month that I had a chestnut tree and suddenly the Hungarian and Bulgarian girls were raving about it. So I came home, researched it and gave it a go. Strangely, it tastes almost like a really exotic cream of mushroom or similar - it definitely has that interesting foresty flavour. So I'm uploading my (extremely simple) recipe here so that next autumn, when I inevitably can't find the recipe online again, this will jog my memory. And for anyone that happens upon this - give it a try, it's lovely!