Add chopped up Mars bars to Sc with milk and cocoa powder, stir frequently until all smooth and melted.
Approx 1/2 hr to 1 hr high, depending on heat of Sc
Transfer to a clean bowl once all melted and let cool for about 15 mins
In a separate bowl whisk egg whites to a soft peak, then slowly and gradually add with a metal spoon add to chocolate mixture. Add to your choice of glass ware and put in fridge for 2 hrs to set, top with cream. Enjoy