It's a quince, a southern tree

It's a quince, a southern tree.

At us on Kuban she grows well. A year of harvest, there are a lot of fruits.
It looks like an apple, but quince is hard and tart. There is its crude is impossible. But it is useful, it has a lot of vitamin C and beta-carotene.
From quince make jelly, marmalade, jam, compotes, juices.