Haddock Gratin

Ingredients Béchamel Sauce 23.0% , water 38.5% , skimmed milk 19.3% , palm oil 9.6% , modified corn starch 4.8% , butter 2.4% , salt 1.2% , whey protein 0.6% , Emulsifier 0.3% , yeast extract 0.2% , maltodextrin 0.1% , sugar 0.0% , onion 0.0% , carrot powder 0.0% , tomato 0.0% , lovage 0.0% , haddock 0.0% , green bean 13.0% , potato 0.0% , mature cheddar 0.0% , haddock 7.0% , wheat flour 0.0% , rapeseed oil 0.0% , mustard 0.0% , lemon juice 0.0% , parsley 0.0% , palm oil 0.0% , chives 0.0% , modified corn starch 0.0% , water 0.0% , tapioca 0.0% , salt 0.0% , white pepper 0.0% , yeast 0.0% , Stabiliser 0.0% , cereals containing gluten 0.0%