Haddock Fishcake With Melting Cheddar Centre

haddock 22.0% , haddock 13.0% , fortified wheat flour 11.5% , potato 12.0% , water 8.4% , single cream 8.4% , mature cheddar 3.5% , rapeseed oil 3.5% , potato flakes 4.0% , whole milk 3.5% , onion 3.5% , wheat starch 2.9% , chives 2.9% , wheat gluten 2.9% , corn flour 2.9% , unsalted butter 0.0% , salt 0.0% , fish gelatine 0.0% , mustard powder 0.0% , yeast 0.0% , rice flour 0.0% , dextrose 0.0% , parsley 0.0% , thyme 0.0% , parsley 0.0% , white wine vinegar 0.0% , spice 0.0% , sea salt 0.0% , sugar 0.0% , onion 0.0% , tamarind paste 0.0% , E160c 0.0% , barley malt extract 0.0% , garlic powder 0.0%