No, I know it's not that kind of marmalade, but a friend asked me for a recipe so I thought I could share it with you too. It's great with good sausages, steak, barbeques or with a tasty cheese.
You will need:-
3lbs / 1.5 kgs red onions, finely sliced
12 garlic cloves, thinly sliced
12 tablespoons olive oil
4 teaspoons black mustard seeds
4 teaspoons whole coriander seeds
150ml red wine vinegar
8oz / 250g dark muscavado sugar
salt and freshly ground black pepper
Tip the onions into a large pan and add garlic, olive oil, mustard seeds and coriander seeds. Stir well to combine and cook gently over a low heat for about 20 minutes, stirring occasionally.
Stir in the vinegar and sugar and continue cooking slowly for a further 15-20 minutes until the onions are translucent and reduced. Stir in 4 tablespoon water and continue to cook for 10 minutes until thick and sticky. Season to taste and pot up into warm, sterilised jars.
The instructions say store for up to 2 months ( but we have kept it for a lot longer, sealed, and it has been fine )