Gameface
Well-Known Member
Not really, it smells really nice - really good aroma! It just seems to be the taste.
I raised this subject recently on another forum and someone suggested it's because I'm using centennial and columbus together which can create really harsh bitterness: http://www.brewuk.co.uk/forums/viewtopic.php?f=24&t=49664
I ask because as far as the temp swings go a hot fermentation can lead to many off flavors. Too high and it can lead to fusel alcohols, which are very harsh.
The other question is to try to understand what you mean by concrete. I don't think of concrete as being bitter. Honestly I don't think of concrete as a flavor. The flavors I asked about would indicate chlorine or chloramines in your water that produce a very unpleasant flavor and aroma that many describe as plastic or band aid like.