So my chef friend, Rich, said he prepared some with bacon. I never would have thought of that....
He made the rest into a mash like I did. Success on both counts, he said.
He had previously mentioned that perhaps the way to clean them was as one does with leeks: cut them lengthwise and then wash. It works very well, he says.
I asked him if he notice the silkiness that I describe here, and his answer was "Yes, kind of fatty".