For me when I see or hear 'greens' I think of Poke or wild poke since it is not something you can buy in a grocery store. Another 4-5 weeks and you will be able to go pick poke greens. Then you take the skin from the true country ham cooked at Christmas and put it in the greens and cook them all day. Serve with a side of cracklin cornbread. Or at least that is how I was taught to do it