Gum arabic, also known as acacia gum, or meska, is a natural gum. It is made of hardened sap from two species of acacia tree; "Senegalia (Acacia) senegal" and "Vachellia (Acacia) seyal". The gum is got from wild trees throughout the Sahel from Senegal to Somalia. In the past it has also been cultivated in Arabia and west Asia.