M&S Mackerel Fillets Frozen Mackerel fillets with a deliciously sweet flavour. Simply defrost, season with salt & pepper and pan-fry for six to eight minutes. Minimum four per pack.Our M&S seafood products have been sourced from fisheries and fish farms in a way that minimises their ethical and environment impact, while guaranteeing you the highest quality, delicious seafood you’d expect from M&S. M&S Food has been at the heart of the nation since 1884. Giving our customers their best-loved products at the incredible quality and value that only M&S can deliver. From Percy Pig to the freshest M&S Select Farms produce, we grow, source, and develop our own products to give you family-ready food that's unbeatable on flavour and innovation. And that's whether you come to us for your family favourites, an indulgent treat, or your perfect party food spread. After all, this is not just food… This is M&S Food. Eat well, Responsibly Sourced, Cooks in 8 Minutes, Needs CookingFor more information about our seafood sourcing, please visit marksandspencer.com/seafoodDeliciously healthy foodBest enjoyed as part of a healthy lifestyle & a balanced varied diet.