Is it an egg? Was that an Easter display? No, actually this is a fruit. Though adding some tamarillos and some real eggs might make it into a good Easter display, it's unfortunately very tightly seasonal at the moment. February only.
It's from Bolivia, via Far North Queensland, with a last stop at Ziggy's, in Belconnen Fresh Food Market. I picked up a few to try, way back on some Sunday in February, and I was glad that I thought to check the web first. It came with a little leaflet explaining how you pop them open and slip out the fruit, but that didn't explain that you can infuse the skins for a drink.
Here's some recipes from the growers' website. It's quite a good website for a food supplier: real information, pretty pictures, recipes, no funky but unusable flash, no boring corporate speak. Well done, them!
The fruit is a relative of the mangosteen, and is called achachairu when it's at home. It's got quite large stones which the fruit clings to, and it's a bit tarter and less perfumed than the mangosteen, though with a very similar texture. And cheaper. I'll be looking out for them next year.
I ate them straight, and put the skins in a jar of water in the fridge to infuse. After 24 hours it was quite well coloured, and tasty. It's a little tart and fruity, but much lighter than a juice. More like an iced tea. I didn't think it needed sugar, but then I like my iced tea unsweetened, too.