• 2 1/4 (338 g) cups All-purpose flour, plain
• 1 tsp Baking soda / bicarbonate of soda
• 1 1/2 (360 g) cups Caster / superfine sugar
• 2 tbsp Cocoa powder, unsweetened
• 1/4 cup Corn starch / cornflour
• 4 cups Icing / powdered sugar
• 2 tbsp Liquid food colouring, red