Isn't Kale this vegetable or do I get this wrong.
Kale is vegetable that is considered to be closer to wild cabbage than most domesticated forms of "Brassica oleracea".
How can you use Kale in a receipe. 
Yes, it can be used in salad
What else can you make with Kale?
I don't know all recipes that can be made with Kale. It a vegetable that is easy to grow and provided important nutrients
What type of nutrients does Kale have?
I don't know those details.
Is there anything else you can tell me about Kale?
Yes, It was one of the most common green vegetables in Europe, until the end of the Middle Ages.