On the rare occasion that there are dregs of wine left over from a party, it often sits on the side for days while everyone dries out. It’s annoying to ever chuck wine. So try this cunning ‘kitchen hack’ of freezing leftovers in an ice cube tray. A big one is best, like this one from Nisbets, otherwise it’s quite fiddly.
Once the wine has frozen, then pop out the ice-cubes, store them in labelled sandwich bags, and then use them for when you’re making a risotto or fish stock, and you don’t want to open a bottle especially.