Over-Extraction

Brief Description:
Happens when coffee is extracted for too long, leading to bitter flavors. Proper grind size and extraction time are key to prevention.


Long description:
Over-extraction occurs when water passes through ground coffee for too long, leading to leaching of bitter and undesirable substances. This phenomenon can cause the final espresso to be bitter and unpleasant. Proper control of extraction time, temperature and grind size is key to preventing this problem.