Can you guess what it is?

Can you guess what this is? I can only guess at the weight, but it must be well over 3 pounds. I grew up eating this vegetable, but on a much smaller scale. It was always a favorite. I wish my mom was alive so I could ask her just exactly how to cook it, but I will experiment since I have a lot of subject to work with.

This is a Kossack Kohlrabi or a giant kohlrabi. The Trout bought it yesterday as he went through town and saw there was a small farmer's market going on. This part of Montana has a lot of Hutterites living here. They are a religious sect and simply delightful people. Years ago we made friends with some Hutterites in a colony in South Dakota. My parents had visited there years before, so we wanted to thank them for the kindness they showed my dad who got ill while visiting there. My father's family goes back to Russia where Hutterites resided because of religious persecution, and came to America to live. My great grandfather belonged to this sect.

So, I know there will be some raw kohlrabi, possibly some in stir-fry, some creamed, braised, etc. Any other ideas? I am a willing listener.