I use ...on all my German sausages. I use it on Bratwurst, Rostbratwurst, Blutwurst, Knackwurst and Leberkäse.
I drive 300 miles each spring to a little German Deli in Pa. that stocks all kinds of genuine German food and food stuff. I grab 4 bottles of Rhinegeld and 20 lbs of German sausages and lunchmeats to last me through the summer...lol...Its almost time (2 weeks) for this years trip!
FWIW, A fresh ground radish on a hot Roast Beef sandwich WILL BLOW YOUR MIND!!!!