Here's my first Esterina F1 fruit, which I harvested, today. I think it should have ripened somewhat longer, but it started coloring on Saturday, and it was dark when I harvested it. I ate it, and was surprised. It was nothing like I had anticipated. It was refreshing, mildly sweet, not acidic tasting at all (kind of like Medovaya Kaplya with regard to acidity), and kind of like a plum in its taste qualities (not the tart qualities of a plum). I was expecting more of a super sweet/tart taste. It didn't have a strong tomato flavor, but more of a fruity flavor (although not a really super strong one).
Location: SW Idaho, USA
USDA hardiness zone: 6
Elevation: 2,260 feet Profile post