The Craft of Roasting     


The process from green to roasted beans is a quick evolution. Over a period of roughly 15 minutes, the green coffee loses moisture, turns yellow and “pops” open, much like popcorn. As it does so, the bean nearly doubles in size, and begins to assume the very light tan color of lightly roasted coffee. Once this stage is achieved, about 8 minutes into the roast, the heat source is turned down and the coffee rapidly darkens in color. When the desired degree of roast has been achieved, the roasting process either is stopped by quenching the beans (using a brief spray of water followed by cooling air) or by just air alone.


Degrees of Roasts (lightest to darkest)


Light brown, dry surface
Grainy taste, distinct sour or acidic tones


American or City:
Medium brown, dry surface with some wrinkles, flat color
Typical commercial roast, no grain flavor, some acidity, richer tones than cinnamon, flavor profile not fully developed


Full City:
Darker, richer brown, oil patches on smooth surface, no wrinkles
Slight, roasted, bittersweet tang, less acidity than American roast, full profile of coffee flavor


 Dark brown, oily surface Definite bittersweet taste, all acidity tones gone


 A hearty roast, bold and spicy


Very dark brown, almost black, very shiny, oily surface
Dark caramel tones, all acidity tones gone