Cod Steaks in Parsley Sauce

cod 49.0% , water 23.5% , milk proteins 14.8% , unsalted butter 2.0% , corn flour 1.5% , onion 1.5% , parsley 1.0% , cream 0.5% , wheat flour 0.5% , fish stock 0.5% , salt 0.4% , lemon juice 0.4% , onion 0.4% , white pepper 0.4% , flavouring 0.4% , cereals containing gluten 0.4% , see ingredients in bold Caution! Although extra care has been taken to remove all bones 0.4% , some may remain 2.4%