I picked this up at the (excellent) feria in Santa Ana, Costa Rica. It's delicious, and has relatively few seeds, compared to other similar fruit I've had. Googling leads me to Ilama, but wikipedia describes the taste as "tart", which it's definitely not. Sweet, custardy, pink near the skin to almost white in the core.
I have saved and will shortly plant the seeds, but it'd be great to know what it is.
Thanks
