How much whisky evaporates in a hot climate?

Evaporation losses from the cask are several times the one to two per cent a year of a Scottish warehouse.

Which distilleries did Jim Swan work with?

Named relationships on the public record include Kavalan in Taiwan, Amrut in India, and Milk and Honey in Israel.

Can good malt whisky be made in a hot climate?

Yes. Advances in science and technology have made it possible to make good malt whisky whatever the climate, and distilleries in India, Taiwan and Israel have been doing so since the 1990s.

A composite of Taiwan and India: maps of both countries, a lit street at night, a temple at sunset, and a row of glasses of whisky. — Taiwan and India entered the malt whisky world with award winning drams.

Jim Swan first went to India in the 1990s. India had been buying Scotch malt whisky in bulk for years to go into its own blends, and by then there was an appetite to make the quality at home instead. That meant single malt, made in India, and the industry's own view of it was on record. Stuart Hutchison Hastie of the Distillers Company Limited had written in 1951 that Scotch whisky cannot be made anywhere else.

There was something behind it. Scotland dealt with heat by not distilling through the height of summer, because a fermentation that gets too warm runs away and the spirit that comes off it is not the spirit anyone wanted. In a hot country the difficulty moves along to the cask, where everything the wood has to give comes out quickly, and a spirit left for what would be a modest time in Scotland can arrive tasting like concentrated oak juice.

What answered it came down to three things: the yeast, refrigeration, and the choice of barrel. Cultured distilling yeasts could hold their own against the bacteria thriving in a warm wash. Refrigeration gave a grip on fermentation temperature that had not been available in a warm country. And the right cask, chosen for that spirit in that climate, kept the wood from taking over before the whisky was ready.

None of it is cheap. Evaporation runs at several times the one to two per cent a year of a Scottish warehouse, and warm conditions leave less time to notice a problem and less room to recover from one, which is why hygiene becomes the thing the whole operation rests on.

The barrels were the part Jim Swan knew about. Years of work on what different oak gives, how it had been seasoned and how it had been treated, meant he could advise a distillery on which casks might suit its spirit and how long to leave it before the oak took over. The distillers took it from there. Named relationships on the public record include Amrut in India, Kavalan in Taiwan, and Milk and Honey in Israel, and what those companies went on to build was their own.

The science behind hot climate distilling and maturation, and how it was arrived at, is in the book.

Subjects

Short factual pages on the things people arrive here looking for.

I am writing the whole of this as a book. Guiding the Spirit: The Peripatetic Life of Jim Swan, expected late in 2026.

Last reviewed 3 August 2026