INGREDIENTS
•
250g unsalted butter
•
600g granulated sugar
•
6 eggs
•
3 tbsp cocoa powder
•
375g plain (all-purpose) flour
•
250ml buttermilk
•
1 tsp vanilla extract
•
½ tsp salt
•
1 tsp bicarbonate of soda (baking soda)
•
1 tsp white vinegar
•
pink food colouring