Bloom

A decorative image for Bloom

Bloom is a term commonly used in the coffee industry to refer to the initial stage of the brewing process. It occurs when hot water comes into contact with freshly ground coffee, causing carbon dioxide to release from the coffee grounds. This release of gas creates a bubbly and foamy appearance on the surface of the coffee grounds.

The bloom stage is considered crucial in coffee brewing as it allows for the optimal extraction of flavors and aromas. When coffee is blooming, it indicates that the coffee beans are fresh and of high quality. Baristas often wait for the bloom to settle before continuing the brewing process, ensuring that the coffee grounds are properly saturated before extraction begins.

During the bloom, coffee enthusiasts may observe the release of various aromas and flavors as the carbon dioxide escapes. This phase is particularly prominent in methods such as pour-over and French press brewing, where the coffee grounds have direct contact with hot water. The bloom adds a captivating element to the overall coffee experience, enhancing the aroma, taste, and visual appeal of the brewed coffee.