Some people do not eat the skin and suck it out like a dark grape and discard the seeds. Any type of food like jams, sauces or juice and wine could be made from the fruits.
Being from the subtropical rain forests and cauliflory, it calls to mind many Australian cauliflorous trees that flower on the trunk.
Bumpy satinash (Syzygium cormiflorum)
Davidson's plum (Davidsonia pruriens)
Durobby (Syzygium moorei)
and many more...
Update
Design of antiseptic formulations containing extract of Plinia cauliflora