salted caramel cake

cake 62.0% , water 19.0% , sugar 9.5% , wheat flour 4.8% , canola oil 2.4% , egg 1.2% , whole milk powder 0.6% , cocoa powder 0.3% , baking powder 0.1% , Emulsifier 0.1% , Humectant 0.0% , lodised salt 0.0% , Modified starch 0.0% , Salted Caramel Buttercream 35.0% , sugar 0.0% , butter 0.0% , caramel sauce 0.0% , Caramel Sauce Topping 2.0%