I'll give this a shot...using a small amount of oil to fry the onions for the brats. Wanted to post photos from the Farmer's Market in Frankfurt.
My favorite brat stand there just fry's the brats in a shallow pan of oil (large griddle). That's it. I go there every Thursday for my Brat's 'n Beer fix.
The only toppings offered are mustard, ketchup, and curry.