I'm not having much luck Googling information about this fruit I bought at the Antigua, GT produce market.
They look like green olives. They are that size. However, like lychees you peel them and there is a the same sort of flesh surrounding the large seed. They flesh is more yellow and there is a sweet-sour quality to it. I am not really fond of them because they also have a tanic quality to them.
Still, I'd like to find out more about them.