Stuffed Lotus Root

What might be more natural to stuff than a lotus root?
It’s a mostly hollow rhizome (actually a stolon or stem) of the lotus flower that grows in muddy ponds throughout Asia. The air passages that run through the bulb form a lacy pattern that is revealed when the rhizome is peeled and sliced crosswise.
It would be more natural to stuff a fowl.
A turkey, for a tradition holiday meal! In clearing the fridge to make room for the big bird, I came across a lotus root which I’d planned to make karashi renkon—lotus root stuffed with ground shrimp or fish flavored with miso, ginger, and Japanese mustard. That recipe is included in this post, but I used ingredients on hand to make my own interesting version. If you are more adventurous, try my much revised recipe!