The most common legend about the discovery of coffee is that it happened in the ninth century A.D. A goat herder in Ethiopia named kalil noticed that hid goats became very active after they ate red berries from a leafy bush. He tried a few berries himseft,and he was soon as overactive as his herd . Kalil told other people in his tribe about his experience, and for the next four hunderd years, people chewe d the berries because they gave quick energy.