Drum Roasters - Roasting Temperature
Many coffee roasters are heated with propane gas, using electricity to drive a drum. A typical roasting temperature ranges from 370 to 540 °F (188 to 282 °C).
Air Roasting Coffee
An air roaster uses a strong upflow of hot air to both heat and agitate the green coffee beans, while a drum roaster is a vaned metal drum that roasts coffee beans using heat of the metal drum and possibly also heat provided by a flow of hot air.
Fluid Bed Coffee Roasters
A Fluid Bed Roaster is an air roaster that agitates and roasts the green coffee beans using a column of hot air, very similar to how a popcorn poppers works. The Fluid Bed Roaster is also called a Sivetz Roaster after Michael Sivetz who invented it.
A batch roaster is a coffee roaster that roasts a specific pre-set quantity (batch) of coffee beans at one time. A continuous roaster is a coffee roaster suitable for large batches of commercial coffee, and which roasts the coffee continuously rather than in consecutive batches.
Specialty Gourmet Coffee and Fine Espresso Brewing Tips
See detailed coffee taste profiles of all of the world's top gourmet coffee and then check out the instructions on preparing Espresso Drink Recipes.