Romanesco, Really?

Apparently everyone knows about this veggie except for me. I opened my CSA box and saw the spiky green alien amidst the usual suspects of celery, radishes, peppers, kale. But what to do with this cross between cauliflower and broccoli?

Besides the convenience of having a box delivered to your door another perk is the challenge of using it all up, especially when you get a mystery ingredient like Romanesco.