Kilner’s Onion Port and Thyme Marmalade recipe is a great way to add rich flavour to sauces and gravies, and tastes delicious with cold meats.

Try  stirring into onion gravy to give traditional bangers and mash a bit of something extra. Proper winter comfort food!

This recipe makes 800ml and will keep for a whole year (although we don’t think you’ll be able to resist that long), or would make a perfect gift for a food-loving friend!


  • 1kg onions, thinly sliced
  • 4 tbsp olive oil
  • 1 tsp sea salt
  • 2 heaped tsp chopped fresh thyme leaves
  • 110g dark soft brown sugar
  • 3tbsp balsamic vinegar
  • 3 tbsp white wine vinegar
  • 2 tbsp Port
  • 2 tbsp redcurrant jelly
  • Freshly ground black pepper


1. Heat the oil in a large pan. Add the onions, salt and thyme and soften gently. Stir occasionally and allow to soften for 35-40 minutes.

2. Once the onions are nice and soft (and we mean melting), add all of the remaining ingredients, plus a good grind of black pepper. Bring slowly to the boil.

3.Cook for a further 10 minutes or so, stirring occasionally, until most of the liquid has evaporated.

4. Spoon the mixture into warm sterilised Kilner Jars and Seal.

Easier than you thought? Now all you have to do is enjoy, or give as a thoughtful homemade gift. Just add a gift tag and some ribbon!Kilner jars


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