Refrigeration
Refrigerators were actually created to keep beer cool. Traditionally, brewing was done during the cooler months so that the produce could be stored easily. For years, ice blocks were stored in cellars to keep beer cool.
Then German scientist Carl Von Linde introduced mechanical refrigeration in 1877. His invention rapidly displaced ice in food handling and introduced efficient compressed-ammonia refrigerator into many industrial processes. By the end of 1880s, refrigeration was common in breweries, and eventually in our homes.