Mamón Chino, a fruit also known as Rambutan (Nephelium lappaceum). The red part is a shell, similar in thickness to an orange peel. It splits in half when you press the center, and reveals a white, jelly-like inside, with a brown pit. It tastes tart, kind of like one of those fruit skittles.
Same reflector as in the Jocote photo: a chromed salad spoon, camera right.