6oz plain flour
4oz cocoa powder
Mix all the dry ingredients into one bowl.
Gently melt the margarine in a saucepan then pour into dry ingredients mix in then use your fingers to rub together mix until it goes crumbly.
Pour into a tin lined with greaseproof paper or spread a little butter around the edges and push down with your hands until level solid.
Bake for about 15 minutes.
Remove from oven and mark out slice with a knife. Sprinkle the top with a little sugar.
Then add pink custard.I cheated and used a tin and added pink food colouring.