‘I can’t cook,’ writes the historian Karina Urbach, ‘which is probably why it took me so long to realise that we had two cookbooks on our shelf at home with the same title’ – a 1938 edition by her grandmother Alice and one from the following year attributed to Rudolf Rösch. When she did notice, however, it provided a key to unlocking some fascinating family history and a little known strand of Nazi persecution. In 1920 Alice Urbach was living in her native Vienna, ‘a 34-year-old widow with no money’. Her husband had proved a feckless gambler and her father, disappointed by her lack of ambition, had virtually cut her out of his will. Yet she found a way of turning her life round. Since she had spent much of her childhood hanging out in the kitchen with the gossipy family cooks, she offered to prepare the food for a sister’s society soirées.