Ingredients

The following ingredients have 5 Servings
  • 2 tbsp vegetable oil
  • 1 large onion, sliced
  • 200ml/7fl oz red wine
  • 100ml/3½fl oz beef stock (or vegetable stock for a vegetarian version)
  • 1 tsp French mustard
  • salt and freshly ground black pepper

Instruction

  • Heat the oil in a frying pan and add the onion. Fry on a low heat for 30-45 minutes, stirring occasionally, or until the onion is golden-brown but not burnt.
  • Pour in the wine and stock, reduce the heat and allow to simmer for 20 minutes, or until the liquid has reduced by half. Stir in the mustard and season, to taste, with salt and freshly ground black pepper.