The thing that links the topics together - the sandwich for the peanut butter and jelly - is Dahl's stays in an Oxford hospital, when Solomon was a junior doctor there. The two struck up a friendship, and Solomon very effectively makes use of their conversations as leaping off points both to take us through Dahl's fascinating life story and the medical incidents that peppered the author's life. We also get a few of Solomon's own experiences (if anything I'd have liked more of these), though it's not long before we are back with Dahl.
Apart from Dahl's own medical experience through to his final injection of morphine from Solomon, which included being rebuilt after a traumatic plane crash in the Second World War, Dahl's family had more than its fair share of medical tragedy. Two of his daughters died in his lifetime - one aged just seven from measles complications, his first wife had a serious stroke, and his son's pram was hit by a car, resulting in a serious brain complication, which led to Dahl helping to design a new kind of valve to reduce pressure on the brain and contributing to a paper in the Lancet.
According to Solomon, Dahl was always curious about medical matters, and they occur regularly in his writing as well as his family experiences. Whenever anything medical comes up, Solomon takes us through the detail of what's involved - though this is in no way a morbid book, lifted as it is by Dahl's life story. I'm personally not a great audience for medical matters (I can't even watch a medical drama on TV), but with a bit of judicious skipping of the more detailed medical aspects I still managed to thoroughly enjoy this book, both in finding about more about this remarkable author, and also in the sensitively handled conversations in the hospital - boosted by Solomon's recent visit to Dahl's home town - all of which really give the reader a sense of being there.
It's an oddity of a book, but one I am very glad that I read - what's more, all the author royalties are going to Dahl's favourite charities.