I took this way back in 20016, and never did anything with it. Today, though, I was looking at images from that year and decided to play around with it a bit. I also used the PlantSnap app which identified it quickly, and I do hope it is correct. Images online match up, so I’m hopeful.
It’s also called Feijoa sellowiana I believe (but I’m a bit confused about this so perhaps a botonist will help me out), and a common name is pineapple guava. It’s native to South America.

Nice. PlantSnap sounds neat even if it only works on smartphones. Thanks
It works pretty well, although it doesn’t catch everything, John. They have a Facebook group as well, and people there have helped identify a few plants for me.