Double chocolate muffin

caster sugar 43.5% , free range eggs 28.3% , chocolate chunk 13.0% , sugar 6.5% , Emulsifier 4.4% , flavouring 2.2% , vegetable oil 1.1% , oil 0.5% , sunflower oil 0.3% , rice flour 0.1% , potato starch 0.1% , corn flour 0.0% , water 0.0% , tapioca 0.0% , Humectant 0.0% , cocoa powder 0.0% , corn starch 0.0% , rice starch 0.0% , fruit juice 0.0% , egg 0.0% , Raising agent 0.0% , E501ii 0.0% , Emulsifier 0.0% , E481 0.0% , E475 0.0% , egg white 0.0% , salt 0.0% , sugar 0.0% , Stabiliser 0.0% , Preservative 0.0% , E282 0.0%