Bratwurst in beer and onion sauce

1. Fry the grilling sausages in a little oil over medium heat until browned all over, then set them aside.

2. Slice the onions thinly and fry them in the remaining fat until golden brown.

3. Add the butter to the onions, sprinkle with flour and cook together briefly.

4. Pour in the dark beer and the stock and boil, stirring constantly, into a silky sauce.

5. Stir in the mustard, season with salt and pepper, then return the sausages and simmer together for a few minutes.

6. Serve the sausages in beer sauce with mashed potatoes or fresh bread.

Tip: A pinch of sugar or a spoonful of apple sauce nicely rounds off the bitterness of the beer.