This is the deal. I made sure I wrote down the names of the unusual produce we purchased b/c I knew I'd never remember them. When we got home I tried doing a search on each of the items. And there is where it got a bit complicated.
I wrote down "Boniato", the name written directly above the produce bin I took the veggie from...but on my receipt it said "Malanga Coco"... and then based on the research I did online - it appears to actually be "Big Taro Root".
I searched around a lot and couldn't come up with any conclusive evidence that these names are all synonyms for the same vegetable. But I'm going to call it Big Taro Root (BTR) b/c in a description for it, I read "white flesh that may be speckled with what resembles grated chocolate." The article also talked about how dry the big taro root is. And that matches to a t the root I cut open.
I decided to microwave the BTR - took about 8 minutes (it's an old microwave probably 20 years old - so might be quicker in a newer microwave), and I poked it all over with a fork before cooking it.
Soon an unusual smell filled the kitchen. It was not at all a baked-potato smell like I was expecting. It had more of a baked muffin odor is how I'd describe it.
Once I cut open the BTR I was happy to see the "chocolate speckled" flesh. In the center of the half though there was a white circle. The outer portions of the BTR were softer than the inner white area - could be it needed a couple more minutes of microwaving.
My ds said "it tastes like mashed potatoes". My dd said "like a sweet potato - very dry".
I really liked it - and seemed like the girl liked it - the boy, hating potatoes of any kind - was all set up in his mind not to like it - and he only barely tasted it.
It was not nearly as sweet as a sweet potato - and did not taste like a regular potato (sorry I'm not good at describing). But from what I've read it has a "distinct artichoke heart and chestnut flavor".
It was very dry. Reminded me of the dryness and consistency of the yoke in a hardboiled egg. I'd much rather eat the BTR than a sweet potato.