A superb, readily available, sustainable fish that is amazingly underrated. Ranging in size from 200g to 800g, mackerel has a bullet-shaped body with beautiful iridescent silvery-blue skin and dark wavy stripes. Mackerel is a rich source of Omega-3 with greyish flesh and an incredibly rich, unbeatable flavour, which is best grilled or baked. Hand-line caught mackerel is the best choice. Any sauce should be sharp to complement its rich flavour: try gooseberry, sorrel, rhubarb, cranberry, redcurrant or mustard, but avoid anything creamy or buttery. Marinating in citrus juices is also good. Mackerel is highly rated in Japanese cuisine, where whole fish are marinated in soy before grilling or griddling. As with most oil-rich fish, it is good for smoking and makes a great pat