Hi,
As a German Food Chemist I have some notes about Stollen. Dresdner
Christstollen, Dresdner Butterstollen and Dresdner Stollen are
synonyms. And an authentic Dresdner Christstollen must be baked in Dresden.
This was part of the unification treaty between the Federal Republik
of Germany and German Democratic Republic in 1989.
http://www.dresdnerstollen.com/
Since than Dresden means a "geographical indication", which says
nothing about the composition. You find the minimum requirements of
"Stollen" in the guidelines for baked goods in the German Food Code.
There is always a basic recipe and every bakery in and about Dresden
has its secret.
If you want to try a good Stollen recipe (German food blogger
approved), try this
http://kochtopf.twoday.net/stories/5391387/
Ulrike from Küchenlatein @ http://ostwestwind.twoday.net