On tasting it, I thought it was leaning towards a bock in some respects. A sweety malt thing going on, but less sugary than some bocks. It's quite full-bodied and has a slightly oily texture. There's a citric-edged hop flavour with a hint of nutmeg that fades a little too quickly. A little bit nutty in the background.
This was alot better than I expected, if judging by the cover at least. Still in the mold of a classic German beer, it's not mind-blowing, but surprisingly drinkable.
I just now checked their website, and here's the official description from Carlsberg:
A beer with a special degree of Lübzer taste. A unique combination of zesty flavour and an enriched alcohol content of 6% result in a one and only taste experience. A balanced bottom-fermented beer.
Lübzer Urkraft has a full-bodied, distinctive taste. The glass bottle is transparent, highlighting its contemporary design, and it lets the beer’s amber colour sparkle through.
I'd never have thought of it as being a Pilsner!