Holy cow! I had no idea this tree was so useful, @joanstewart. I went through an "Africa" phase in my youth and read all kinds of books about the history, geography, and exploration of the continent. I always was intrigued by this tree for the name alone. Thank you for filling in the details!
Always more to learn, I was reading in some parts of Africa they grow lots of these trees in a nursery, when still young sell them for eating the roots, similar to carrots also highly nutritious.
Never too old to learn!
Oh wow. I bet those are so yummy. I love all the roots veggies :)