Warnings:Thanks Meg! A little late, but nice to know I proved them correct.
Chestnuts that have not been cut or pricked to allow steam to escape may explode, even after being removed from the heat.
Anyway, here are a few links I received:
UK Ready, Steady Cook Site:
A Japanese blog
The Australian Chestnut Company
Now the question is which recipe to try tomorrow.... I'm heading towards the "Baked Chestnut and Chocolate Pudding" - provided I can get the chestnuts out of their shells safely!