This is starting to get very interesting, as an ex Fullers manager I can attest to some customers noticing the difference between a freshly tapped barrel, a middle of life, and end of life, and of course some preferred fresh whilst others preferred old, plenty didn't notice (or didn't comment) we're talking from 1 to 5 days the difference, so what exactly does FST ESB taste like? Well, depends on the pub, some had higher standards than others, so the experience differed, Fullers was not alone, Youngs was the same, and I would contest any cask conditioned ale outlet would have had the same issues. We're talking early CAMRA days (no aspirators) so it may be a bit different now. Worth mentioning is the use of "sparklers" and the ability of the bar "person" pc gone bloody mad, to regulate the pull pressure so as to ensure an acceptable "head" As the barrel aged (flattened) the sparkler would be wound up and the pressure on the handle increased, I had barmaids that could annihilate the average guy in an arm wrestle. I happen to prefer FST LP and have an aspirator and engine specifically for it, I typically do 20L batches but for my LP I do a half batch, and very often chuck the last 2,3 or 4L's, I'm going to follow this thread with great interest.