German beer after Gustav II Adolf

When driving in Germany I got the tip that maybe on one of the stops on the Autobahn near Leipzig I could find the Gustav II Adolf beer. We stopped and to behold we found the beer in one of the stops and we bought every beer on sale there. It was just eight beers so it was not that many. The name of the beer were Ur-krostitzer and the legend says that Gustav II Adolf drank it in 1631 and liked it very much and as  thanks he gave the brewer a gold ring.
How does it taste? Oh well, that will have to wait until another day.