I and others eat these new (2012) Zills this way. Cut the halves off close to the seed as possible. Like filleting a fish. Scoop out the halves with a spoon and eat/ Then scrape the skin to get multi-interesting tastes. Eat around the seed as much as possible for more multi-tastes.
The ST is the
green skin one. Not rock hard at all. It was slightly soft. Though all green outside the flesh was orange and sweet. Had full ST sweetness and nice acid complexity.
The LZ was full
ripe yellow skin. Tasted 75% as good and sweet as the full taste LZs I have eaten. To be fair the LZ was ripe to slightly over ripe. (the ST was not!) So in LZ not much acid complexity, the sweetness overwhelmed it.
Verdict: Sweet Tart was the winner
In one photo note the large seed in ST. ST has a high seed to flesh ratio. Both kinds are poly-embryonic unless I am mistaken.
Above two photos show the mango halves from LZ (right) and ST (left).
With your tablespoon scrape the skin for all remaining flesh and good tastes.
The above two photos show the large ST seed compared to an intact ST half and a skinned ST half. ST has high seed to flesh ratio.
Best eaten outside then washing hands and face with this: