And won't those carmalized cubes be even better with fried bacon and onion, and slightly carmalized brussel sprounts on top! (With a splash of vinegerette or sesame oil on your assembled bowl!)
I grew some Korean golden sweet potatoes in 5 garden bags this year. Not impressed by the yield, but I expect a a reduced yield growing in bags. I have not tasted them yet, they are curing on the back porch. There were a bunch of them but they were smallish with a number of skinny ones. Apparently the skinnies are good for making slips for next year.
RareSeeds Sweet Potato Korean Gold
Covington is a good variety in northern tier states, but I think you already know this!
Jung Seed Covington Sweet Potato
If I had room I would probably grow it (along with a lot of other things!)
It can be grown faster in a controlled setting than in the bog, so some lady is starting to select fast growing varieties and growing it in a green house. Need to save the bogs for the pitcher plants!!