[citation needed] Sanger is the author of The Vegetarian Traveller (1987), a guide to the foods and eating habits around Europe and the Mediterranean, which was one of the first travel guides for vegetarians and was a best-seller in the United Kingdom;[1] and a commentary on Robert Louis Stevenson's An Inland Voyage (1991).
The book gave a rise to a series published by A&C Black (London) urging the same approach to other countries.
Sanger's novel The J-Word (2009 and 2018), about secular Jewish identity,[2] is not on a travel-related theme, and is set in the neighbourhood of Golders Green in his native north-west London.
The J-Word is a set reading list book on the "Judaism as a Lived Religion" course at Lund University, Sweden.
The Unknown Mrs Rosen (2020), about a courageous former spy now elderly and in need of care, has a more evident travel connection with settings in various parts of the UK, Germany and France.