Cream butter and sugar.
Beat in eggs, one at a time.
Beat in vanilla, and jam.
Sift flour, baking powder and cocoa together.
Dissolve soda in the milk.
Fold dry ingredients and milk alternately into butter mixture.
Fold in the chocolate chips.
Spoon into 22cm prepared round tin.
Bake for 45 mins at 180°C.
When cold ice with chocolate icing.