This topic came up in another thread, and I'd like to discuss how to use Yuzu.
First I want to say Yuzu is a wonderful unique citrus, with a unique flavor. But those who do not know how to properly use Yuzu may not be able to appreciate it.
I never found a good use for yuzu & cut both my trees down.
And you never bothered to do any research to see how Yuzu fruit are used?
Sure I did, and still couldn't find a use for them. I'm not going to float them in the bath & as far as a good tasting citrus, it isn't.
Yuzu is definitely not a fruit for direct out of hand eating.
I slice up a Yuzu, remove all the seeds (there's a lot of them but it's not difficult because the seeds are so big), then chop up the fruits further and cook them into a citrus marmalade sauce to spread over fish. With Yuzu there's no need to remove the rinds, indeed there wouldn't be that much useable part of the fruit left if you did so. The rinds have a lot of flavor, and are a lot more tender, less bitter, and more edible than lemon or orange rinds would be.
This isn't unusual. Sometimes mandarin peels and even orange peels are used in stir fries in Chinese cuisine, mostly to impart flavor but it won't hurt if you eat some of it. However the rinds of Yuzu are much more edible.
Not quite like the kumquats but I would say they are only a little less tender than mandarinquats.
I actually enjoy taking a few table out of the peel of a fresh Yuzu.
Yuzu is most typically used for flavoring. It's really in good in Japanese-style ponzu sauces for dipping.
Typically the entire fruits are crushed, with the juice and essential oils from the rind collected. (It would probably be even better flavor wise to remove the seeds first before crushing but that would add more work)
There's not a huge amount of juice inside a Yuzu, and this is in large part because there are so many large seeds.
Yuzu kosho is great on egg rolls or omelettes. Yuzu is also good in salad dressings.
Also good for soba (buckwheat) noodles or Japanese noodle bowls with fish.
Lemon juice can substitute for Yuzu in most recipes but the flavor is just not the same.
Also there are some great recipes for candied Yuzu peel, which are much like candied citron.
You could even bake these into a cake, and I have a great tasting recipe for Yuzu blueberry muffins.
If you're still not sold on Yuzu, you might see this video for inspiration:
https://www.youtube.com/watch?v=jdUq2AVLEn8I'm sure Yuzu has (or could have) all sorts of other culinary uses as well.