Why does beer taste different from the bottle vs. Pub A tap vs. Pub B tap

Question

Just been enjoying a few beers lately. Same beer from the bottle good, from pub A great, then again from the tap of pub B tastes more bitter, an entirely different flavour that isn’t as refreshing.

I’ve experienced this before. So what’s up? Why are two pubs pouring the exact same beer from the tap and coming out with different flavours?

In: Other

Answer 1

Beer lines need to be cleaned regularly – if beer tastes “off” at a bar, they likely don’t maintain their lines. It could be other things like age of the keg, how often it is rotated, temp, CO2 level too, but line cleanliness is the most likely issue.