This attractive fruit <cough> is called a Medlar.
When it is ripe, it’s still not edible. It has to sit and soften for more than two weeks, before it can be eaten.
Apparently, they taste like cinnamon applesauce, with a hint of wine.
Cinnamon is supposed to be an aphrodisiac, but I rather doubt Eve would have got the same reaction from Adam if she had offered one of these delightful-looking things, instead of an apple.
Around the world, these fruit (which are mostly only available in Iran) are called a variety of other names including Azgil, Cat’s Arse, Open-Arse, and Cul-de-Chien. I leave it up to you to imagine why they acquired those names!
I just have to work this fruit into a story somewhere….!