Artichoke is Enginar in Turkish language

I went to the wet market today and found this weird looking vegetable. It's so weird, first time I ever seen in my life. At first, I thought it is white radish, or wasabi or something like that.

Funny that I have to post this picture on my Twitter and Facebook to ask about it's name. At the end, I have to ask a neighbor because nobody on my Facebook knows what is that. 

According to my neighbor, you can cook it like cooking mushroom. I am not so sure either I want to try it or not. Is it tasty?