Three cheese casserole potatoes

potato 51.7% , corn starch 24.1% , maltodextrin 12.1% , flour 6.0% , salt 2.2% , whey 1.9% , garlic 1.0% , onion 0.5% , E340 0.2% , palm oil 0.1% , vegetable oil 0.1% , cheddar 0.0% , whey 0.0% , parmigiano reggiano 0.0% , buttermilk 0.0% , coconut oil 0.0% , leek 0.0% , monoglycerides 0.0% , E270 0.0% , flavouring 0.0% , E339 0.0% , E327 0.0% , yeast extract 0.0% , natural flavouring 0.0% , blue cheese 0.0% , skimmed milk 0.0% , Colour 0.0% , E551 0.0% , E222 0.0%