You will need the following,
into a large mixing bowl place--
two medium eggs, two large mugs full of self raising flour, one large mug full of caster sugar, one large mug full of margarine or vegetable oil and half a pint of milk, or a little more so that the mixture has the right consistency.
Mix it altogether to form a yummy mixture, then add three quarters of a very large bar of bournville chocolate chopped up and two large mugfulls of black berries and slowly fold in.
Place the mixture into cake cases within two muffin pans.