@dwcon Scumble, which I understand is a riff off real-world scrumpy (and in particular the "nuclear-orange" stuff they used to serve at Clarecraft Discworld Events).

Nanny Ogg's scumble is described in Lords and Ladies a great comfort for those occasions when you wake up at 4am and forget who you are — after a swig of scumble you still can't remember who you are, but that's okay because you're someone else anyway.

I think it's also described as quite efficient for stripping paint and varnish.