Coffee roasting is the process of turning green coffee beans into brown ones. The easiest way to tell different roasts apart is by looking at the color and texture of the roasted coffee beans.
Medium roast coffees are medium brown in color, with no oil on the bean surface. Medium roast tends to be sweeter than light roast, with more body and a balanced acidity. This is the beautiful result of natural coffee flavors in harmony with an even, smooth flavor.