Method:

1. Slice the onions, then add a small amount of oil to a frying pan
2. Cook the onions for 5-6 mins until they begin to soften
3. Take the onions out, then add the bratwurst
4. Fry for 7-8 mins, turning during cooking
5. Add  onions to each roll, top with a brat then smother with smoked chilli ketchup
6. Enjoy, with a German beer!