I LOVE these things. They're near impossible to find, even when in season. If anyone knows a place where they can be ordered, or at least purchased in the summer with any consistancy, PLEASE let me know! THanks! :)
if you are talking about green plums that are the size of a nectarine, i saw them at the farmer's market in union square this past weekend...the vendor was on the southern most section on union square west