Eli5: How did people make and keep ice in medieval times, and how do we manufacture ice cubes now ?

Question

Eli5: How did people make and keep ice in medieval times, and how do we manufacture ice cubes now ?

In: Technology

Answer 1

They didn’t. They cut it from frozen lakes in the winter with big saws and then packed it in underground ice houses packed with sawdust. Warmer climates did not have access to ice.