Mercifully, this isn’t a recipe for a particularly revolting folk remedy. In fact, it’s the ingredients for paper – as it was made in ancient China, that is. At the time of its invention ...

CURIOUS CAT:Hello, children. What are you doing? BOY:We're making things out of paper. GIRL:Look, I made a paper hat. CURIOUS CAT:Wow, that's brilliant. Paper is really useful for lots of things.