Cream the butter and sugar.

Add beaten egg. Mix through.

Add flour, soda, salt each in its turn with milk.

Add jam and vinegar.

Bake at 180*C until toothpick comes out clean.

For the sauce: Melt the cream, butter, water, sugar.

Add vanilla

Put in oven until pudding.

To eat: put the pudding on top of the cake and enjoy :)