Sweet potatoes are important in their local culture, being the most important tool used in bartering, especially in dowries. Likewise pigs feasts are extremely important to celebrate events communally; the success of a feast, and that of a village big man (man of influence) or organiser, is often gauged by the number of pigs slaughtered.
The Dani use an earth oven method of cooking pig and their staple crops such as sweet potato, banana, and cassava. They heat some stones in a fire until they are extremely hot, then wrap cuts of meat and pieces of sweet potato or banana inside banana leaves.
The food package is then lowered into a pit which has been lined with some of the hot stones described above, the remaining hot stones are then placed on top, and the pit is covered in grass and a cover to keep steam in. After a couple of hours the pit is opened and the food removed and eaten. Pigs are too valuable to be served regularly, and are reserved for special occasions only.