Doubleground

Doubleground refers to a method of grinding coffee beans twice. This process is distinct from single grinding, which is the standard method for preparing coffee. Double grinding aims to achieve a finer consistency of coffee grounds than a single grind typically produces. The rationale behind this is often to increase the surface area of the coffee particles, potentially leading to a more intense flavor extraction during the brewing process.

However, double grinding coffee beans is not a widely adopted or recommended practice in the coffee industry. Over-grinding coffee can lead to several undesirable outcomes. The fine particles can become too small, resembling powder, which can clog coffee filters, especially in methods like pour-over or drip coffee machines. This clogging can impede water flow, leading to over-extraction and a bitter, astringent taste. Furthermore, the increased surface area from double grinding can also cause the coffee to stale more rapidly, as it is more exposed to oxygen. While some home baristas may experiment with double grinding, most professional recommendations suggest sticking to a single, appropriate grind size for the chosen brewing method to achieve optimal flavor and clarity.