Erb
swurst is a compressed pea food that was used as emergency rations by the German Army. In the early 1900's wilderness travelers carried it.
Here is a link to the history:
http://17thdivision.tripod.com/rationsoftheageofempire/id2.htmlThey sell some reproduction rations with apparently Erbswurst coming.....
with some quick searching I think Erbswurst may still be sold in Germany, though I cannot tell if it is still a compressed "sausage" of soup or powder. Unfortunately my translation abilities are not good enough. But I found several places with this search.
KNORR Erbswurst grün und gelb
Realistically though the powdered green pea or lentil soups sold in the grocery seems to be the same, just uncompressed. I like a thick cup of lentil soup especially at a winter lunch.