Kola is usually in two varieties namely bitter kola and kola nuts. Though the focus of this manual is on bitter kola, It is important to note that kola nuts is further sub-divided into Gworo and Igbo Oji. While gworo is mostly consumed in the Northern part of the country, Igbo oji is mostly consumed in the Eastern part of the country, where they play a very significant role in the custom and tradition of the people. Kola trees are natives of central and West Africa and are distinguished primarily by the medicinal and stimulant properties of their nuts, barks and leaves.Â