How do you cook collard greens?

[david]

I bought these collard greens and i dont know how to cook them.

 

[littlemissplendid]

I usually put some olive oil in a pan and saute them until they're wilted.

 

[RichardR]

put them in a pot with a lot ow water,an onion and a piece of salt pork,and boil them down