Thanks....I know question seems stupid as they are branded as "Old" ales. Anyone know if doppelbock's age?
I can't speak for the various incarnations of Adam, but old ales are pretty much identical to English barleywines. So yeah, they age. Not that many people seem to age doppelbock. Samichlaus and Samichlaus Helles are the only ones I know of, but those are weird anyway.
Schneider Aventinus is released in brewery aged vintages (easy to recognize as they are wrapped in paper). I had a 7 year old bottle that was quite tasty.
Basically any Hair of the Dog that's not an IPA can be aged pretty much indefinitely. I have had 15 year old Fred and 30 year old Adam and they are just fantastic. The 'from the wood' stuff will age real well also. Old ales are probably my favourite to age, though the term is a bit of a 'catch all'