Yep that is a vegetable, one of those old fashioned ones.
Cut in thin slices, no need to peel, just trim the end of like you would so with a carrot
Spread on a baking tray in a single layer.
A little sprinkling of sea salt
Two table spoons of coconut oil spooned over
In the oven at 220C.
Flipping after 10 minutes
15-20 minutes should do the trick, depending on your oven and amount of trays using.
You want them little browned and crispy.
I snuck mine in as a side dish, I also often mix them up with sweet potato.
Make plenty, they shrink, disappear and are lovely as a leftover.