Have you tried malangas?

Common in Cuba and Puerto Rico, malangas just recently made it into my local grocery store.  They're pretty unattractive root vegetables, with a shaggy skin and uncertain shape.  Some are bulbous, some are long and curvy.  All are pretty ugly. 

But oh, the taste!  If you simply peel them (easier to do than it looks like), boil them up and mash or whip them like regular potatoes, they are just delicious.  Malangas have a nutty flavor, and they whip up creamy smooth and silky without any additions of cream or milk.  I added some chopped scallions and that was all...not even butter.