Red onion marmalade recipe

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2 small jars




15 min


1 hr

Nutrition per portion

Calories 25 kCal 1%

This tangy red onion marmalade with mustard seed, garlic and chilli is delicious served with mature cheddar cheese or cold meats.


  • 1tbsp olive oil
  • 500g red onions, peeled and finely sliced
  • 1tbsp mustard seeds
  • 2 cloves garlic, peeled and finely sliced
  • 1 red chilli, deseeded and chopped
  • 60g light muscovado sugar
  • 100ml red wine
  • 100ml  balsamic vinegar
  • A handful of thyme sprigs
  • 2 small jars, sterilised


  • Heat the oil in a large pan with the onions and mustard seeds. Cook for 15 mins. Add the garlic, chilli and sugar, and 5 tbsps water. Cover and cook for 15 mins. Add the wine, vinegar and thyme sprigs.

  • Bring to the boil, then simmer for 20-30 mins until the mixture is syrupy. Remove thyme.

  • Spoon into the hot, sterilised jars, seal and label. The marmalade will keep 2 months.

Top tip for making Red onion marmalade

Use port, if you want a richer flavoured marmalade instead of the red wine.

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