M&S Beer Battered Cod Bites Frozen Generous chunks of cod fillet in a light and crispy Amarillo golden ale batter. Simply oven cook from frozen for 22 minutes and serves alongside mushy peas, chunky chips and tartar sauce. Serves 4. 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.