mcduhamel
Member
I've been brewing for 15 years, and during that entire time, I've almost always detected a certain flavor in beer I keg that I don't see in the same beer if I bottle it. The flavor is very hard to describe: it's almost reminiscent of keg lube (which I know is supposed to be flavorless), vaguely metallic (but not the dreaded copper penny flavor). Sometimes it's quite subtle; other times it hits me over the head. I've detected it in new kegs and used kegs. It shows up whether I force carbonate or keg condition. It appears in almost every style of beer I brew, but is more prominent in pale ales and bitters than it is in saisons and Belgians. I obsessively disassemble my kegs before use, clean with PBW, sanitize with StarSan, and flush with CO2 before transfer. Has anyone else ever experienced anything like this, and does anyone have any thoughts regarding what's going on?