Whats this 'fruit' called

[Martin Page]

Its a vine grown fruit/veg ... Green, hard, pears shaped and wrinkled. Its larger than a standard pear and grows from the 'fruit' not a seed
When I was given it the guy called it something like a treorchy or trichlorchee something like that. It was planted on its side and only half covered to a natural crease on its base from where the tap root started from. (A bit like you grow a avocado)
its a very scruffy grower, but shot ahead when it got to the wire fence and was able to climb. It started flowering little white insignificant flowers in September and produced identical fruit as the seed, in abundance,(some 20 fruit)

I've not seen anything like it on the veg stalls and I cant find any record of anything like in all my plant books and without a name I don't know what to do with it

[Wicksey]

Could it be this? I have seen them for sale here so recognised the description.

http://en.wikipedia.org/wiki/Chayote

[Martin Page]

That's the devil ... well done you !

Not a lot going for it then, it would seem .... Oh well, it was fun to grow !