The kohlrabi cooks up nice with the onions and greens, no gooey stickiness like the potatoes. I love potatoes, but not in this recipe. This was really good, just with onions, kohlrabi, kale, collards. I added some flavored vinegar for a little extra flavor. I got some fancy vinegars a while back and this was champagne pear or something. I think you can't go wrong with any high-quality fruit balsamic vinegar.
