bcavaciuti

Do not use a galvanised bucket, if this gets hot enough (cracks etc might allow that) nasty toxic gases will be released. They may not have immediate effect but can cause a whole host of problems in later life, so not worth it.

Thus Gandalf's hat was born in the depths of AvE's Dungeon/Workshop.

I think it would be much better as bread to produce foam, bread crumb doesn't have the foam properties so less insulation.