When selecting your green coffee one of the first things you have to look for is a supplier that offers only the top grades of coffee. Your supplier needs to be able to cup all the coffees before they purchase the coffee from the different origins around the world. The supplier needs to rate the grade of the bean to see if it has any imperfections. Some beans are under developed which will affect the taste and quality of the cup of coffee you will experience. It is the responsibility of the roaster to do the same when selecting the coffee he choices to roast.