Ingredients
- 8 onions
- a dash of balsamic vinegar
- 250 ml white wine or Xeres vinegar
- 1.5 l beef stock
- 2 sprigs of thyme
- 4 slices of spice cake
- 4 slices of raclette cheese
- salt and pepper
- 1
Sauté the onions until translucent. Add a dash of balsamic vinegar and cook for 2 minutes. Add the white wine or Xeres vinegar.
- 2
Add the beef stock and the thyme, and let simmer for 40 minutes over medium heat. Season with salt and pepper.
- 3
Lay a slice of raclette cheese on each slice of spice cake and grill until the cheese has melted.
- 4
Remove the sprigs of thyme and serve the soup with the toasted spice cake.