This receipe didn't get good reviews.
I didn't bother measuring anything, went by looks and taste. It's probably is just missing mustard, bit hard to call it German without it.
I didn't have green onion, used red, used white vinegar, honey, olive oil and mustard. Added the cooked potato in with the bacon on the heat until I got it right. It was very delicious, dutch/german husband piled his plate up high.
Substituted only because I haven't been grocery shopping, not trying to be a smarty pants.