As summed up by Homer Simpson, the most important philosopher of the 20th century: Beer is the cause of and solution to all of life’s problems. The amber liquid deserves a fair share of the credit for a lot of major changes and advances throughout humanity’s history.
10 Refrigeration
Fridges keep our food fresh and safe for our consumption. They are absolutely critical to our survival and the way we have flourished in the modern world. We also use them to keep our beers nice and cold, which is actually what they were created for.
Brewing traditionally only took place during the cooler months, as it is an exothermic process. It generates heat, and too much heat can kill the yeast and ruin the beer. For hundreds of years, blocks of ice were harvested and stored in cellars to keep the beer cool. Then came the breakthrough of mechanical refrigeration by Carl Von Linde, who was employed by the Spaten Brewery in Munich.
By the 1880s, refrigeration was common in breweries. It was expensive, but it let them brew all year round. It further let breweries grow and pop up in locations far from ice sources. This also led to the dominance of cooler lager beers . . . as well as, eventually, the presence of refrigerators in everyone’s home.

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