Can Anyone Help Me Identify This Mystery Fruit?

[Bathsheba]

HERE is a photo of a piece of fruit that grows near our front gate. This one is a relatively small one as the season is nearly over and I can't reach the bigger ones. I really like them.... they taste a bit like lemonade. You kind of scoop out the softer bit in the middle which is the sweetest... gets a little more tart as you get to the skin which you can't eat. I've never seen them sold in shops. Has anyone ever seen or eaten one???

ETA: the seeds are small and edible.

[alioops]

My parents had something like that but it was yellow when it was ripe. Could it be a perssimon?

[Junglemum]

It looks like a feijoa to me.

[Bathsheba]

Alioops: nah, not a persimon... I'm familiar with them... but thanks for trying!

Falguni: Hmmmm.... now that name rings a bell.... I might have to Google. Thanks!!!

The skin stays green right through it's life cycle... kinda has a greyish patina which rubs off once you handle it.

ETA: Kamarine: not a custard apple... i know about them, they are yum

[Marlene]

Maybe a Babaco....

[Marlene]

After googling.....definitely a Feijoa!!!

[sneakysparkle]

ooh definately a feijoa - I havent had one of those since primary school!

[Kamarine]

Persimmons are normally rounder. Like orange tomatoes.

Reminds me kinda of a custard apple.

[AnyDream]

It's not a persimmon, they are orange, smell really strong and have a star-shaped leafy thing near the stalk.

I think it might be a New Zealand fruit, Artechim was telling us a few weeks ago she has planted the trees, can't remember what they are called sorry.

ETA - Thanks Ange, pretty certain FEIJOA!!! is the answer!!