Preheat oven to 350 degrees. Grease two 8-by- 12-inch cake pans, and line bottom with parchment paper. Sift cocoa powder, flour, baking powder, and salt into a medium bowl; set aside. Put butter ...
Line the base of two 20cm/8in loose-bottomed cake tins with baking paper and grease the sides with baking spread. Sieve the cocoa powder into a large mixing bowl. Add the water and stir until you ...