Preparation of a decaffeinated roasted coffee blend

摘要

A lower-grade green coffee bean fraction is moisturized to above 37% by weight and then decaffeinated by extraction with a moist supercritical fluid having a temperature of at least 100 DEG C. This decaffeinated coffee is then combined, either before or after roasting, with a higher-grade coffee fraction. Typically the higher-grade fraction will be coffee which has been decaffeinated by extraction with a moist supercritical fluid at a temperature below about 85 DEG C.