Wild punga fruit

The  is an item added to Fallout 3 in the Point Lookout add-on.

It is a wild fruit that grows all over Point Lookout and has the effect of lowering radiation and healing you at the same time. The perk Punga Power! increases the radiation healing effects, but does not affect its HP healing.
 * could be the result rads on marijunana

It is one of the ingredients of Moonshine and as such part of the quest A Spoonful of Whiskey.

Other uses

 * Punga may be used as a fruit battery. Desmond is conducting a Punga experiment in his little lab.