Preheat oven at 180 degrees
Add the egg and vanilla and beat until everything is well incorporated.
Cream butter n sugar until light n creamy.
In a separate bowl sift flour,cocoa salt.
Mix the food colour with buttermilk.
Add the flour in 3 additions alternating with buttermilk.mix well scrapping the side of the bowl with a spatula to remove any unmixed ingredients.
Add the vinegar and bicarbonate of soda.Beat until well mixed.
Spoon the mixture into paper cases 2/3 full and bake in preheated oven for 20_25 mins.
Cool in a wire rack.
For frosting : Whip 1cup heavy cream until it doubles in size n thickens. Top your Muffin's n dust with cake Crumb's.
