2 Melt in the middle Smoked Haddock Fishcakes With a Cheddar & Leek Sauce

haddock 32.0% , water 9.0% , haddock 9.0% , potato 9.0% , wheat flour 9.0% , durum wheat semolina 8.4% , whole milk 4.2% , potato 4.2% , rapeseed oil 4.2% , whipping cream 2.1% , extra mature cheddar 2.1% , leek 2.1% , wheat gluten 2.1% , emmental 2.1% , wheat starch 2.1% , medium fat soft cheese 0.6% , unsalted butter 0.6% , corn flour 0.6% , chives 0.6% , lemon juice 0.6% , fish gelatine 0.6% , yeast 0.6% , salt 0.6% , sugar 0.6% , English mustard 0.6% , E160c 0.0% , black pepper extract 0.0%