So I have been purchasing growlers for over a month from a local restaurant and always buy the same beer. The last two growlers I can tell the beer is starting to get flat. My question is what happens when bars reopen and try to sell old draft at premium prices? I know that a local Whole Foods drained poured all their draft when stay at home started but what about the kegs that have sat for a long period of time on tap? will people complain about off tasting beer or just be happy to be in a bar drinking again?