Strychnos cocculoides

Strychnos cocculoides, also known as the corky-bark monkey orange tree, or Ntonga, and suurklapper in Afrikaans, is a fruiting tree of Southern Africa. It produces a "large, pleasant flavored fruit" (the monkey orange) that is sometimes hard to find in shops but easy to handle. The flavorful fruit is considered a good prospect for further agricultural and economic development in the region....read more on Wikipedia.