So, this may or may not blow up this conundrum. About 40 or so years ago, we had a Der Weinerschintzel place here locally. About 35 or so years ago, it changed to the 39 cent hamburger stand. A few years after that, I move out of the area. I moved back about 5 years ago, and I am fairly certain there is no restaurant there at all now. In between then which is now 20+, when I live in San Diego area, there was a Der Weinerschitnzel. Just like I remembered. So, short story, I am not sure there was consistency from coast to coast on the chili sauce at der Weinerschnitzel.
And, my favorite punk rock band recorded a song about the place, but they were from Hermosa Beach.