I must have lived a sheltered life as well, since I had never heard of doing this.
As a test, I froze some vinegar and then removed the acid. I have a roll of no date
Buffalo nickels that my mom had pulled out of change when she was a kid. I've been experimenting on them, and so far I've found a 1919-P, a 1913-P Type II and a 1925-P.