Butter Chicken Cooking Sauce

water 55.9% , double cream 8.0% , onion 8.5% , modified corn starch 3.2% , butter 2.0% , sugar 1.5% , tomato purée 1.0% , rapeseed oil 1.5% , garlic puree 1.5% , salt 1.5% , ginger 1.5% , cumin 1.5% , E330 1.5% , E270 1.5% , coriander 1.5% , paprika 1.5% , E415 1.5% , garam masala 1.5% , E160c 0.7% , dried fenugreek leaf 0.7% , cassia 0.7% , turmeric 0.7% , cardamom 0.0% , chili pepper 0.0% , ! 0.0%