At our bowls club we have tow bitters (courage best and London Pride) we also have Carlsberg.
All beers are 9 gallon kegs. The problem is when we pull a pint we get more head then beer, it used to be just the London Pride but now it’s all three. We called the suppliers and the engineer said, it’s because we keep the beer too long. He said a keg will need to be drunk in 4 days once put on line. We have two gasses a mixed gas which we used to use for Worthington Smooth and CO2 which was always Courage and Carlsberg. Now we seem to have CO2 for London Pride and Carlsberg and Mixed for London Pride.
Can anyone give us a clue as how to put this problem right. My thoughts are it’s the under bar cooler that’s at fault. The cold room is kept at 11F.