Help me remember the name of this fruit from Tarija please?

by Avery
(Rexburg, ID)

I lived in Bolivia for two years and spent my first 3 months in Tarija. There was a fruit that I don't see listed here. It was small, pinkish on the inside, dark on the outside. I have a hard time describing it, but I know some people made jams with it too. Do you know what fruit I'm talking about? I can't remember the name.