Ha, so I recently brewed a Kölsch that was mostly pilsner, only boiled for 60 minutes and left the lid on. So, uhhhh...
I mean, I thought it tasted OK at bottling, but unless someone gave me a sample and a control, I'm not sure I could pick out that flaw.
Third Floor Cellars Brewery
Brewing in my 5 cu. ft. "basement" since 2010
Primary: Big Bear IPA, Petits Jour de Chien Saison
Bottled: K.I.S.S. (Keep It Simcoe Stupid) Pale Ale, Little Bear Kolsch
Planning: RyePA, Nutella Stout