By "chaffe" is meant small waxy-looking flakes -- kinda like dandruff or snowflakes or something. They might be "gall stone seeds" -- i.e. the beginnings of gall stones -- in which case they're probably made of cholesterol. But I've only ever flushed them out once, and I haven't heard of anyone having them tested, so what they actually are is one of the Great Mysteries of Liver Flushes.