Good supermarkets here should stock pickled herrings, as will good fishmongers if you give them a few days’ notice. You can also get them really easily from mail order/online stockists like totallyswedish.com. They will sit happily in your fridge, begging to be used as a fabulous starter, or as a main course with new potatoes and a simple green salad. I urge you to give them a try.
Of an adult's reference intake