Dr Jim Swan

The book

Guiding the Spirit: The Peripatetic Life of Jim Swan

A life story, and the science that came out of it. A reader comes away knowing how a whisky is made, what the cask does to it, and why one is unlike another.

Six photographs of Jim Swan across his working life. Top row: as a schoolboy with his arms folded, as a young chemist in a laboratory, and in doctoral robes in Edinburgh. Bottom row: in front of a stack of felled oak, at laboratory instruments, and holding a glass of whisky up to the light.

The story it tells

Jim Swan spent fifty-two years on whisky and died in 2017 without writing any of it down. He kept the notebooks, though, from 1965 to the end. This is the book they make possible.

He belonged to the first generation of whisky technologists, the men and women who took inherited practice and asked why it worked. He started at a contract laboratory outside Edinburgh in 1965, doing flavour work for food manufacturers, drinks companies and, increasingly, the Scotch industry. That was the part he took, and it kept him for the rest of his life: the oak forests of Missouri, the bodegas of Jerez, and distilleries in Taiwan, India, Wales and Israel. Somewhere along the way he picked up the name the Flying Whisky Doctor.

The book follows the work. Chill haze and what it cost. The flavour wheel, and how an industry that had described whisky in private language agreed on a public one. The sherry cask trade, and what replaced it. The oak itself, cell by cell. And the last twenty years, when good malt was made in heat that Scotland had always called impossible.

It begins with eight people walking out of one laboratory to work on whisky together, and twelve competing firms who agreed to fund them and share what came out of it. It takes in the coopers of Missouri, the sherry families of Jerez, and the distillers who carried the science to places it had not been written for. Where the record names people, the book names them. Where it is silent, the book says so.

He was my father, and the archive came to me. Notebooks going back to the 1960s, photographs he took between 1965 and 2015, diaries, letters, his working library, and the recollections of colleagues who are still here to give them. Almost none of it has been written down anywhere else.

Publication is expected late in 2026.

To be told when it is published, write to victoria@drjimswan.com with the word Publication in the subject line.

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Last reviewed 3 August 2026