As far as his closest aides were aware, he kept to a strict healthy diet and drank only lukewarm water. But Adolf Hitler would regularly stave off attacks of midnight munchies by tucking into specially made ‘Fuhrer Cake’ and other gooey treats. He would raid the kitchen after staying up late talking to guests and rarely get up before 2pm, according to a maid who worked at his mountain retreat in Bavaria. Austrian Mrs Kalhammer – then Elisabeth Marchtrenkerin – went to work at the Fuhrer’s retreat near Berchtesgaden in 1943 after answering an advert in her local paper: ‘Maid...