Chocolate Chip Mint Aero Cake

I was delighted to be asked to make this bad boy for a wee boys birthday. It’s pretty indulgent but yummy. 2 1/4 oz of Cocoa Powder 6tbsp boiling water 4.5 eggs 9oz butter 9oz golden caster sugar 6 3/4 oz of self raising flour 1 1/2 tsp bak7ng powder 1 1/2 tbsp chocolate chips…