I gotta give it to mulberries, don’t get enough attention!
The buds of the flower Bauhinia variegata are both cooked amd used for pickles, spectacular stuff.
Rambutan
Loquats! Its like eating a giant sweet grape
I don’t see it mentioned so maybe it’s not lesser known, but jackfruit is amazing. SEA like most amazing fruit but have seen it more often in North America. Fresh, not the prepped and sauced vegan style.
Chokecherry These make your mouth feel furry inside if you eat them, but make the best syrup for pancakes
Where i live, mayapple! But you can’t buy them anywhere, you have to just pick them. Luckily they’re all over the place lol