I bought some cans of Carling.
Lovely.
I bought some again. Same place.
Terrible.
I wrote to Carling asking why they tasted so different.
They asked me to send two cans, one of each in a prepaid package.
Luckily I still had some of the original case.
So they wrote back.
Everything was fine. No problems with abv, chemical make up etc.
however
One was brewed in Glagow and one in Burton on Trent.
They explained there were water quality differences between the two brewing areas.
Burton used spring water, Glasgow used????
They told me usually folk can't taste the difference however some people have higher taste sensors.
Where I had purchase them was on the delivery boundary of two breweries so it was pot luck which was held in stock.
They gave me the code of the Button brewery made beer and asked that I look on the cans to get the correct one.
So it's not just bottles and cans. It's where the water comes from and where it was brewed also.
And yes, before you ask.
They gave me and the wife free flights to Barbados for helping out.