The large Bakongo society features a diversity of occupations. Some are farmers who grow staples and cash crops. Among the staples are cassava, bananas, maize, taro and sweet potatoes. Other crops include peanuts (groundnuts) and beans. The cash crops were introduced by the colonial rulers, and these include coffee and cacao for the chocolate industry. Palm oil is another export commodity, while the traditional urena is a famine food. Some Kongo people fish and hunt, but most work in factories and trade in towns.