It is possible. Make it like hard candy. I dehydrated radishes for this very reason a long time ago but never put them into the candy. I'm about to try again only without radish dust, maybe just add some kind of clear juice to the boiling sugar. Then you let them form in either a mold or a large cookie sheet and break them into perfect pieces...i am trying to figure out what to use for "glue" because I fully intend to build a tower out of my candy sticks. Right before I eat it.
I have also made candied radishes, and I'm about to attempt peach and garlic pie.
I have no idea how that will turn out, but I will honestly tell you that candied radishes are surprisingly good.
I'm not sure I'm a good enough cook to pull off a souffle, but artichoke souffle really sounds good, too. Maybe someday I'll risk it.