Originally Posted by SOB_OCDAVE
What's wrong with using copper? Entire brewing systems have been constructed from copper. It is more expensive than it use to be but is cheaper than SS. If you're worried about the oxidized copper leeching into your beer, run some starsan through it before serving. The acidity of the starsan will make it look shinny and new.
Copper is fine for beer PRE-fermentation. But not after fermentation. And as far as rinsing off the "gross" layer to leave it shiny, that is actually backwards. The shiny service is more harmful, you want the oxidized layer on the copper. I don't remember the science behind it, but it's here on the forums.