What is the reason sparkling wines are served in flute glasses?

Serving sparkling wines in flute glasses primarily accentuates the bubbles. The design of the flute, which has a narrow and elongated shape, helps to retain the carbon dioxide in the wine and enhances the visual appeal of the bubbles as they rise through the glass. This specific shape allows the effervescence to be more pronounced, creating a delightful presentation that is enjoyable to observe.

Additionally, flutes concentrate the light and aromas, providing a more focused experience. While preserving aroma and revealing a wine's color are also important aspects of wine service, the flute's primary benefit is its ability to showcase and maintain the integrity of the bubbles, making the drinking experience more enjoyable and visually captivating. This enhances not just the aesthetic of the wine but also the overall tasting experience, highlighting one of the key characteristics of sparkling wines: their effervescence.