Hot Chocolate Fudge Cake

egg 18.5% , glucose syrup 18.5% , water 18.5% , wheat flour 18.5% , sour cream 18.5% , sugar 2.5% , brown sugar 2.5% , palm fat 2.5% , fat reduced cocoa powder 2.5% , rapeseed oil 2.5% , wheat starch 2.5% , fructose 2.5% , milk chocolate 2.5% , cocoa powder 2.5% , cocoa paste 2.5% , E471 0.0% , E500ii 0.0% , E341i 0.0% , E500i 0.0% , E450i 0.0% , invert sugar syrup 0.0% , E330 0.0%