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

In the Netherlands ice was usually harvested for pubs and cafes in the winter from the river, imagine that beginning scene from frozen, and stored in the basement of the pub. It would melt during the summer but would keep beer cold for a pretty long time.