Creamy stroganoff sauce

mushroom 30.0% , beef broth 17.5% , double cream 17.5% , sour cream 14.4% , brandy 5.0% , onion 2.5% , corn flour 2.5% , butter 2.5% , tomato purée 2.5% , paprika 2.5% , parsley 1.6% , salt 0.3% , garlic puree 0.3% , cracked black pepper 0.3% , mustard 0.3% , vinegar 0.2% , Mustard Husk 0.1% , pimiento 0.1% , turmeric 0.1%