Boil milk in a thick bottom vessel.Once boiled,keep it in a low flame.Add custard powder and sugar in a half cup of cold milk and mix well.Add this custard powder mixture in the boil milk and mix well.Stir continuously for thickening the milk.Switch off the gas.Once cooled,keep in the fridge.Chop the banana and pour the lemon juice and add in the custardWe have to assemble them in glass.First put small pieces of chocolate cake in a giass.Then add fruit custardThen in third layer add chocolate cake and label with fruit custardGarnish with cherryServe chilled