Mariner's Pie

potato 42.0% , water 23.5% , alaska pollock 18.3% , sweetcorn 5.0% , rapeseed oil 2.5% , cream 2.5% , milk proteins 2.5% , onion 1.8% , breadcrumbs 0.9% , corn flour 0.5% , wheat flour 0.2% , cheddar 0.1% , coating 0.1% , parsley 0.0% , dextrose 0.0% , salt 0.0% , flavouring 0.0% , potato starch 0.0%