Selling Cold to the Tropics

A Global Supply Chain Built on Melting Ice

By: Jessica Jones

Narrated by: Virtual Voice

In the early nineteenth century, a Boston entrepreneur proposed an idea that sounded almost absurd.

He believed he could make money by selling ice to people living in the tropics.

At the time, ice was something most people only experienced during winter. Once the season ended, it disappeared. The idea that frozen water could be harvested, stored, and shipped across oceans seemed unrealistic.

But Frederic Tudor believed it could be done.

During the winter months in New England, workers cut massive blocks of ice from frozen lakes. These blocks were carefully packed into ships using layers of insulating materials such as sawdust.

The ships then sailed thousands of miles to tropical ports.

The destination cities included Havana, Calcutta, and many other locations where ice had never been available before.

For residents of these warm climates, the arrival of ice was astonishing. Cold drinks became possible. Fresh foods could be preserved longer. Wealthy households began serving chilled desserts and beverages that had previously been unimaginable.

Demand grew quickly.

Soon large ice houses were constructed in tropical cities to store the imported ice. These buildings were carefully designed to slow melting and extend the life of the frozen cargo.

Meanwhile in New England, the ice harvest became a massive winter industry. Thousands of workers cut and stored enormous quantities of frozen lake water each year.

Within a few decades, the ice trade had grown into a global network.

Ships regularly carried ice across the Atlantic and around the world. What had once seemed like a ridiculous idea became one of the most unusual international industries of the nineteenth century.

Frederic Tudor eventually became known as the “Ice King,” a man who had successfully turned winter itself into a product.

But the industry he created would not last forever.

The invention of mechanical refrigeration eventually made it possible to produce ice anywhere, ending the long-distance shipping of frozen lakes.

Today refrigeration is so common that it is easy to forget how revolutionary cold once was.

Selling Cold to the Tropics tells the fascinating story of the global ice trade—a forgotten chapter of economic history where entrepreneurs harvested winter and shipped it across oceans to the hottest places on Earth.

It is a story of innovation, global trade, and the surprising lengths people will go to turn nature into a business.