Weird fruit

[Wimpling]

Can anyone knowledgeable help me identify this? It's come from a bush in my new garden that is about 3 feet high. This is the biggest one (2.5 inches long) but there are lots about the size of an almond.

I have no idea what it might be but I want to know! Google hasn't suggested anything.

The “real deal” isn’t just a different variety, it’s a different species entirely, same family but different genus. But most obviously, it’s a tree. And the fruit is huge. Pear shaped but about 3 times the size and weight

But yes, you can use japanese quince, Chaenomeles, in the same way, and they have a similar taste.

Both of them are in the rose family, as are so many of our fruits - apples, pears, medlars, blackberries, raspberries, strawberries, peaches, apricots …