Traditional subsistence agriculture satisfies food needs, while most villagers engage in small-scale cash crop production as well. Often grown in large upland gardens (with good rainfall and safe from roving pigs), the primary crops are taro, banana, yam, and manioc. Kumala (sweet potatoes – a good tuber thereof is called "iggeremanggeggeuni"), vegetables, fruits and nuts help to provide an excellent diet, though protein is occasionally lacking. Without substantial reefs, seafood is less significant a protein source compared with other islands of Vanuatu and in any case is inaccessible to the large populations living at high inland elevations.