In which decade did pilsner glasses gain popularity?

Pilsner glasses began to gain popularity in the 1930s, driven largely by the rising popularity of pilsner-style lagers that originated in the Czech Republic. This style of glass is designed to showcase the beer's clarity and colour while enhancing the aromatic qualities, which align with the characteristics of pilsners known for their light body and crisp profile.

During the 1930s, the global market for beer was expanding, and with it came the production of clear, lightweight glassware. Breweries started promoting pilsner beers more aggressively, and the use of specialized glasses helped enhance the overall drinking experience. This development was part of a broader trend of beer marketing and presentation that emerged in the interwar years.

The later decades, such as the 1940s and 1950s, saw the continued popularity of various beer styles and further developments in beer culture, but the foundational adoption of pilsner glasses specifically occurred in the 1930s, making it the correct answer.