Authentic French Chocolate Swirl Brioche

wheat flour 42.6% , sugar 9.0% , water 9.0% , chocolate chunk 6.0% , egg 4.8% , crème fraîche 4.8% , chocolate powder 3.5% , non-hydrogenated vegetable oils 1.8% , modified potato starch 1.8% , egg white 1.8% , whole milk powder 1.8% , yeast 1.8% , rice semolina 1.8% , natural flavouring 1.8% , butterfat 1.8% , whey powder 1.8% , cocoa powder 1.8% , salt 0.2% , wheat gluten 0.2% , egg yolk powder 0.2% , wheat starch 0.2% , Emulsifier 0.2% , milk proteins 0.2% , Thickener 0.2% , powdered egg white 0.2% , maltodextrin 0.2% , deactivated yeast 0.2% , Colour 0.2% , natural vanilla flavouring 0.2% , Antioxidant 0.2%