When life gives you 5kg of onions on a chilly Sunday afternoon, what do you do? Make red onion jam, of course!
Take 8 red onions, peel and dice them. Put onion into a large, thick-bottomed pot (the thick bottom distributes heat more evenly – I use my £8 Le Crueset saucepan). Add two fistfuls of juicy golden sultanas, and a few slugs of balsamic vinegar. Add two cups of sugar, then pour 2/3 of a bottle of cheap red wine over the mixture. Season with rock salt and freshly cracked pepper, for luck.
Heat the pot on a high heat until the mixture is boiling, then turn down to a simmer. Then you wait. It might take up to two hours, but aside from the occasional stir, leave the mixture to reduce. The sultanas will be plump with wine; the onion will become a sticky sweet mess. You’ll have a thick, syrupy jam – which goes well with almost everything, but is particularly good slathered on a slab of blue cheese, and eaten between two pieces of toasted bread.