Mary Berry Chocolate Cupcakes

Name: Mary Berry Chocolate Cupcakes
Prep time: 20 min
Cook time: 15 min
Total time: 35 min
Cuisine: American
Ingredients: 40gCocoa powder; 4 tbspWater (boiling); 3Free range large egg whites; 175gUnsalted butter (softened); 165gBillington's Unrefined Golden Caster Sugar; 115gAllinson's Self Raising Flour; 1 tspBaking powder; 60gUnsalted butter (softened); 30gCocoa powder; 250gSilver Spoon Icing Sugar; 3 tbspMilk (whole); A handfulDecorations; 200gSilver Spoon Chocolate Fudge Flavour Icing Sugar; 100gUnsalted butter (softened)