鬼柚子

I have been cooking mostly boring food--I keep meaning to take pictures, but keep forgetting.
Anyway, tonight I made yuzu marmalade. I didn't have a recipe, and the end result is a titch on the sweet side, but I think it's good.
I started with this:


It's called an oni-yuzu (devil's yuzu), apparently. My friend's mother gave it to me. I wasn't quite sure what to do with it. When I cut it open, it had no strong yuzu scent, which surprised me. It also had a lot of juice, and only one seed. Yuzu normally is quite fragrant, has very little juice, and has about twenty seeds in one fruit, which is usually about half the size of an orange or so. The oni-yuzu, by contrast, was the size of a grapefruit.
It also had the most amount of pith I've ever seen in a citrus. Yuzu normally is quite pithy, but not like the oni-yuzu was. I spent like an hour cleaning it up to make the marmalade. It was worth it however, because the oni-yuzu has a delicate, lovely flavor that I think is just sensational.
I did use three other yuzu I had in my fridge that were given to me by another friend in the marmalade, as well. These yuzu were juiceless, seedy, and fragrant. I think altogether it made a nice balance, although I'd like to make a marmalade with just oni-yuzu. I think it would be sweeter, tenderer, and an interesting experiment. Not sure when I'll get another oni-yuzu though. I did save the single seed the fruit contained, so maybe in the spring I'll see if it sprouts.

The end product: