What is the Rambung coffee varietal?

Rambung is a Typica-derived cultivar native to Ethiopia and introduced to Java in 1928 as part of the Dutch colonial coffee programme. Alongside Bergendal, Pasumah, and BLP, it forms part of the group of Typica variants brought to Indonesia from African and Ethiopian sources in the colonial era.

Like other traditional Typica derivatives in Indonesia, Rambung is low-yielding and has been largely replaced on most commercial farms by more productive Catimor-type varieties. It contributes to the characteristic full-bodied, low-acid profile of traditional Javan coffees when processed using Giling Basah.

It's maintained on some heritage or conservation plots in Indonesia and appears in discussions of traditional Indonesian coffee genetics. If you're building a picture of Sumatran or Javan origin history, Rambung is one of the names that traces the Dutch colonial introduction route from Ethiopia through Java.