Yes, it is the beautiful fruit of an Hedychium gardnerianum, I believe.
I thought it might be fun to quiz the participants of the Forum, but John is really too good!
This is the first time in many years that our Hedychiums have produced a single fruit and eventually I hope 3 seeds?
We found the best way to keep our Hedychiums alive during the summer droughts was to cultivate them in double pots: a regular plastic one for the plant itself, a slightly larger terra cotta one without a hole to keep the water below, where the roots can develop and keep moist; we simply add a little water once every ten days approximately.