In which year was the first automatic steam-based espresso machine invented?

The first automatic steam-based espresso machine was invented in 1933. This innovation marked a pivotal moment in coffee brewing technology, revolutionizing how espresso was made in cafes and set the foundation for modern espresso machines. Before this, espresso machines relied heavily on manual processes.

The introduction of automatic steam pressure mechanisms allowed for more consistent brewing of espresso, enabling baristas to produce high-quality shots with greater efficiency. This development was crucial for the coffee industry, as it significantly improved the quality and accessibility of espresso-based beverages for consumers.

The other years mentioned are significant in espresso machine history but do not correspond to the invention of the first automatic steam-based version. For example, while there were advancements in espresso machinery before 1933, they were not automated, meaning they required more hands-on techniques by baristas. The year 1933 stands out as the point where the automatic functionality truly began to take hold in espresso machine design.