Green coffee beans are raw, unroasted beans. They have not yet developed the aroma and flavor typically associated with coffee. To enjoy them as a beverage, the beans must first go through a roasting process. Roasted coffee beans are green beans that have been heated to develop their flavor, aroma, and color. After roasting, the beans gradually lose freshness, so they are best consumed within 1–2 weeks. When properly stored, green beans can last up to one year while maintaining quality.