Before mechanical refrigeration systems were introduced, ice harvesting, using ice and snow to cool food, was the only method of food refrigeration. The Chinese harvested ice from rivers and lakes in winter as early as 1000 BC, as a natural form of refrigeration. The first known artificial form of refrigeration was demonstrated by William Cullen at the University of Glasgow in 1748. Before mechanical refrigeration systems were introduced, ice harvesting, using ice and snow to cool food, was the only method of food refrigeration. Today’s refrigerators are mostly designed for sustainability, extending the shelf life of food, reducing waste, and saving resources.

Source: Indian Express October 18, 2023 04:26 UTC