Originally Posted by Ravenshead
I would doubt that, traditional boilers are made from copper. Also, I believe the copper ions than get into the wort/beer are good for the yeast but I can't remember where I got that from. The low pH of the beer will actually keep the copper clean too.
The brewing illuminati say NO to copper in fermentor, yes in the boil pot.
Apparently, copper sulfate, a poison, can result if copper is present post-fermentation. While I doubt it's a serious problem, I wouldn't tempt the hand of fate.