At my previous workplace I had lots of Bavarian colleagues. Once a month, we would gather in the office kitchen to have a big Weißwurst brunch (consisting of lots of veal sausages imported by the colleagues, pretzel rolls and the only permissible mustard: Händlmaier).
Recreating this brunch without meat is difficult, if one is picky concerning the taste of the sausage exclusively. We tested sausages advertised as Weißwurst by Vegourmet, but found them to be not much different from generic vegan sausages you can buy in larger supermarkets.
If one appreciates the combination of vegan sausage, Händlmaier mustard and a bite of pretzel together however, this makes for a nice Sunday brunch. A beer doesn’t hurt.