Both sweet and full of flavor.
I've never seen them here in the US, but they were more common in the UK markets. My daughter said the lady in booth selling them called them "pineapple tomatoes". And they do have a sweet flavor rather like pineapple.
I wish they would last until Halloween. Wouldn't they be perfect?
When I included some fresh mozzarella, olive oil, and the hearty Swiss rye bread, who could ask for a better lunch.