Ok. So apparently I just made that up. I can't find it anywhere online. That's really weird. I mean, of all the random things to pull out of one's head and think that it was something I had learned...why ash to clean leather?
Never mind. I'll take that out.
EDIT: Ash can be used to make soap. I must have heard that before and somehow in my scrambled brain I got it mixed up with cleaning leather. I just read about it online. So I'm not completely crazy.