There are a couple of these trees in my local park in London. I collect windfall fruit in the autumn. Nobody else seems to notice all the free fruit! I put them

There are a couple of these trees in my local park in London. I collect windfall fruit in the autumn. Nobody else seems to notice all the free fruit! I put them in a box in a closet for a month or so and then make jelly. It goes a really deep red colour and has a nice, unique flavour.