Heat oven to 180C/160C fan/gas 4 and grease 2 x 22cm round cake tins, lining the bases with baking parchment and greasing the parchment too

Heat oven to 180C/160C fan/gas 4. Oil and line the base of three 19cm sandwich tins.

Heat oven to 180C/160C fan/gas 4. Oil and line the base of three 19cm sandwich tins. Mix the flour, cocoa, bicarb and sugar in a bowl.