Add the soya milk, lemon zest and juice from one lemon. Beat well until the ingredients are thoroughly combined and the mixture is smooth. Quickly spoon the cake mix into the prepared tin ...

Grease and flour a 20cm/8in square cake tin with some of the sunflower oil. In a bowl sift together the flour, salt, cocoa powder and sugar. Add the oil, soya milk and vanilla extract, and mix ...