Although they're both purple and have a comparable sweet taste, there are distinct differences between the Okinawan purple sweet potato
Okinawan purple sweet potatoes, very much like their orange counterparts, are actually flowering
These spuds have a thin off-white colored skin that can be consumed, and have a semi-sweet flavor with a mealy texture.
One of the big differences between the ube, a tuber from Southeast Asia, and the purple potato is rather simplistic.
The former isn't a potato but a yam, and one with a particular sweet flavor that's perfect for your next dessert.
Thanks to an appearance like a bark with thick wiry roots, no one would easily confuse the ube with another type of potato.
Another relevant distinction between ube and purple sweet potatoes is in their glycemic indexes.
An ube ranks at 79 while the Okinawan purple potato is at 54. This makes the purple tuber better for those who want to manage their blood suga