Coffee roasting is a technological process which turns the weak and associative green smell of raw coffee to full, well known aroma which the coffee lovers adore. The roasting evens the aroma, acidity and other components of taste and aroma of the coffee which leads to the desired taste. The industrial coffee roasting is done in specially designed machines which can process great quantities of coffee beans. The coffee roasting method itself as well as the temperature for roasting significantly affects the final product, i.e. the taste of coffee. Besides the roasting process itself, the percentage ratio of the coffee blend used in the recipe is very important for final taste of the coffee. Certainly, besides the automated process of modern roasteries, the touch of the roaster is very important because the aroma and the appearance of the bean can be determined only by a human.