| 摘要 |
<p>Coffee is produced by first suspending a bubbling bed thereof under conditions which avoid popping in a heated medium wherein the heating gas is present in excess of 10:1 gas to coffee, the gas being less than 630 DEG F, and thereafter exposing the coffee to a further charge of hot gas at a comparable gas to coffee ratio to complete the roast, the second charge of air being at a temperature equal to or less than the first charge. The roasted coffee which is produced has a roasted whole bean density of from 0.28 to 0.34 gms./cc. When the roasted whole beans are suitably ground, a roasted and ground coffee of 11 to 13.5 oz. per 1000 cc. is produced. The first and second roasting chamber (68,70) comprise rotating, cylindrical foraminous containers (64,66) and helical screw members (60,62) attached to and rotatable within these containers.</p> |
