M&S 2 Scottish Poached Salmon Fillets Two Scottish salmon fillets gently poached by our experts for a delicate flavour and texture. For best results, serve directly from the fridge. Serves 2. 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.