Choc Orange Bar Cake

sugar 51.6% , wheat flour 24.2% , egg 12.1% , vegetable oil 6.1% , milk 3.0% , water 1.5% , cocoa powder 0.8% , whey powder 0.4% , Raising agent 0.2% , milk solids 0.1% , salt 0.0% , Humectant 0.0% , Colour 0.0% , vanilla flavouring 0.0% , wheat starch 0.0% , Preservitives 0.0% , Emulsifier 0.0% , 322‚435 0.0% , 475 0.0% , 471 soy 0.0% , 476 0.0% , 475 0.0% , 4771 0.0% , natural flavouring 0.0% , Bulking agent 0.0% , orange essential oil 0.0% , vegetable gums 0.0% , Thickener 0.0% , Acidity regulator 0.0% , Colour 0.0% , Antioxidant 0.0% , soya oil 0.0%