Were you confused when you looked at the picture for the first time? I completely understand, those thingies there look like real potato fries. Lo and behold, it’s just kohlrabies, but they really look the deal, right?
The simplest of recipes:
cut a kohlrabi into fries, season it with whatever you like (I prefer salt, pepper, chili, and garlic), and then broil or fry them in a pan until brown.