Red Onion Marmalade

Name: Red Onion Marmalade
Yield: Makes about 500ml
Cuisine: Scottish
Ingredients: 2 large red onions, thinly sliced; 2 tbsp lemon juice; 2 tbsp soft dark brown sugar; 2 tbsp olive oil; 30 g butter; 3 grinds black pepper; ½ tsp salt; 1 tbsp red wine; 1 tbsp balsamic vinegar

Preparation info

Makes about
500
ml

Difficulty
Easy

Appears in

Gloagburn

By Alison Niven

Published 2025

About

This is a quick and useful preserve that we use in recipes like the Wensleydale tart and our filo pastry parcels. It will keep in the fridge in a sealed jar for 3 to 4 weeks.

Ingredients

2 large red onions, thinly sliced
30 g butter
2 tbsp

United Kingdom
Gluten-free
Vegetarian
Scotland

Method

Put the sliced red onions into a heavy-based pot with the butter, oil and sugar. Cook on a medium heat, stirring from time to time, for 15 minutes or until the onions are well softened.
Add the lemon juice, balsamic vinegar, red wine, salt and black pepper and cook for another 5 minutes, then taste and adjust the seasoning if it needs it.
Pour into a