Last year somebody handed these out at a gathering for everyone to try. They were sweet and tasted like pineapple. Unfortunately I didn't catch what they were called.
I'd never seen them before so I did a search and came up with Physalis peruviana also known as Golden Berry,  Cape Goodeberry and Ground Cherry.
It's an annual with a long growing season, but I decided to try them anyway. I found seeds - very few seeds at an expensive price!
The plants grew surprisingly well.

The flowers are tiny little things.

And the fruit is encased in a husk, very much like a tomatillo. Golden berries are closely related to tomatillos.

Once the husk turns from green to yellow and starts to dry out, it is ripe and easily falls from the plant.

I picked a handful of them. At the moment they are quite productive. I'll save some seeds from this year's crop and try them again next year.