I was really very pleasantly surprised by this - I'm already quite a fan of Cain's beers, but I'd tried the keg version of the lager & was pretty uninspired; it seems like a whole lotta tweaking's been going on :~)
Not a very typical lager in too many senses (not cereal-filled UK macro-brew, nor super-bitter German pils, or Czech Saaz-hoppy beauty) but lovely nonetheless. Good golden colour, low carbonation obviously, very pleasant malt background, low estery fruitiness, and good flowery/fruity, but oddly un-lagery hoppiness from the styrian goldings (ale-hop, grown in slovenia, derived from fuggles).
The freshness of the hop flavour suggests dry-hops in cask (something Cain's do with their Mild of all beers, to great effect) I'm guessing this, plus the lack of filtration (which 'robs' flavour from beer) is a big part of why the cask was so much more flavourful compared to keg. I will re-try the keg version though, just out of interest.
Despite maybe not ticking all the boxes in an authenticity test, all in all, a decent beer IMO. cheers MikeMcG.