Health Recovery
Bananas are used to replenish lost hit points caused by enemy attacks or spells. Players can avoid dying by eating one or multiple bananas after battle. Bananas are always available at the Karamja General Store, but players can also harvest them from banana trees or use a spell to convert bones into bananas.
Quest Requirement
Bananas are required as a part of the Tai Bwo Wannai Trio quest. To finish the quest, players need to add sliced bananas to Karamjan rum. Bananas are also required for the quest given by Luther, the quest giver on Karjama Island.
Making Money
According to RuneScapeCentral.net, bananas can help players accumulate up to 3000 gold points, making this one of the first money-making opportunities available to new players. To initiate it, sail to Karjama Island, where the quest giver Luther is located. He will instruct players to pick bananas and put them in crates for 30 gold points. This quest is repeatable, and players can earn the 30 gold points reward repeatedly.
Creating Items
Bananas are necessary to create sliced bananas, a required item for the quest Tai Bwo Wannai Trio. Players can create sliced bananas by attacking them with a knife. Alternatively, players can use any slashing weapon, such as a poisoned dagger, to slice the banana in half.