General Foods Limited

James P Mahlmann

Steven M Schechter

Stephen F Hudak

Lawrence S Brandlein

William W Erb

Lawrence Scher

Steven M Schecter

Ernest R LaSalle

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.degree. 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.

Coffee roasting method

Roasted coffee is ground by passage through grinding and regrinding steps, each step being characterized by having the rolls thereof in each pair thereof moving linearly at the same speed to produce a granulized coffee, the coffee being ground substantially in a single bean dimension and being thereby discretely cracked.

Coffee grinding method

A coffee roasting method permitting control of final product properties is disclosed. Gases, usually air and combustion gases, are heated to a temperature selected from the range between 200.degree. C. and about 240.degree. C. A bed of coffee beans is suspended in a bubbling bed by the heated gas and maintained that way for about 2 minutes to about 10 minutes. The roasted coffee beans are subsequently discharged from the bubbling bed and cooled. The density of the roasted coffee beans is determined by the specific roasting conditions selected.

Controlled coffee roasting

A water extract of green coffee beans is dried and this dried powder is extracted with a solvent for caffeine such as ethanol. The decaffeinated solids are rehydrated and either reincorporated into the water-extracted green coffee which is then roasted and ground or used as a caffeine-deficient extraction medium for decaffeinating green coffee.

Decaffeination of green coffee

A novel roasted and ground coffee product having a unique appearance is produced by roasting a first coffee fraction to a first roast color and water quenching said roasted beans to a relatively high moisture level, separately roasting a second coffee fraction to a second, discernibly different roast color and water quenching said roasted beans to a relatively low moisture level. The two roasted coffee bean fractions are then blended together and ground, producing a coffee product having a speckled appearance wherein the average particle size of the high-moisture fraction is at least 300 microns larger than the average particle size of the low-moisture fraction.

Roasted and ground coffee product and method

The concentration of volatile organics that can be incorporated into a glyceride carrier is increased by the use of pressure in excess of 100 psia. Specifically coffee grinder gas aromatics are contacted with coffee oil in a pressure vessel. The resulting aromatized oil is then combined with soluble coffee solids.

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Wayne, NJ, United States of America

James P Mahlmann