Garcinia sizygiifolia tastes good and refreshing, like mangosteen fruit (Garcinia mangistana), but Garcinia sizygiifolia has a more sour taste.

You can read this abstrac :
Analysis Relationship between Mangosteen (Garcinia mangostana L.) and Its Relatives Based on  Morphological and Moleculer Marker (ISSR) under direction of SOBIR and EDI SANTOSA (http://janters.blogspot.com/2012/01/garcinia-sizygiifolia-berbuah-di-kebun.html)