Haha, knew this one would sound super iffy. I mean let's think... Dangerous poison- beer vessel? Hmmmmm hahaha.
But when I think about it it must be possible to clean stainless steel completely with some sort of acid wash. Just couldn't pass up the price.
Already have four 5 gallon cornys but was thinking this could be good for some stovetop brews and crazy experimental batches I don't want 5-10 gallons of. Anyway yeah, going to start going through intensive scrub and soak cycles with different cleaners. Maybe I can get them tested for dangerous residue somewhere afterwords (I am right next to the University of Georgia).