Marinated Mackerel

When mackerel are fine, fat and plentiful, there is no better fish to be bought for the price. They are not only beautiful to look at but are one of the oily fish meant to be so good for you. They must be spanking fresh. I remember once in Ullapool, with its fishing harbour and boats all lined up, that it was impossible to buy a fish in the shops, such is the waywardness of bureaucracy, but you could sometimes gather them when they were dropped by a passing seagull. Slightly damaged maybe,