you will need
3 large red onions
1 tbsp olive oil
3 tbsps dark muscavado sugar
Â½ cup red-wine vinegar
Cut the onions in half, peel and slice. Sauté the onion in olive oil in a medium-size saucepan over a low heat for 15 minutes.
Stir regularly to prevent the onions sticking to the bottom of the pan.
Add in the sugar and stir regularly for a further five minutes.
Add the vinegar and stir over a low heat for a further 10 minutes.