BOTANICAL MYSTERY - What is this? (clue #2)

Yesterday, I posted a photo of a Brazilian fruit, and and gave some clues as to its identity. To continue, here's one more hint and an additional photo to help in identification. Again, if you want to guess or think you know what this is, leave a comment.

The hint is that this fruit comes from the Amazonian rain forest, and is NOT normally eaten fresh.

Here's the photo: