What is the purpose of grinding coffee beans?

Grinding coffee beans serves a crucial purpose in the coffee brewing process by increasing the surface area of the coffee particles. This larger surface area enables optimal extraction of flavors and compounds during brewing. When coffee is brewed, hot water extracts soluble compounds from the coffee grounds, and the rate of extraction is faster when there is more exposed surface area.

As the grind size gets finer, more surface area is available for the water to interact with the coffee, leading to a more balanced and flavorful cup. If the grind is too coarse, the extraction may be insufficient, resulting in under-extraction and a weak flavor profile. On the other hand, if the grind is too fine, it can lead to over-extraction, causing bitterness.

This understanding highlights the importance of grind size and how it impacts the overall taste and enjoyment of the coffee.