What's kolarahbi?
I think that should read kohlrabi: "a plant with an edible turnip-shaped stem". I useda eat that too. It's been years, but as I recall, it tasted tart and juicy, something between an unripe pear and a radish. Very hard too.
No, I can't really describe what it tastes like. It is crunchy ( raw ) and a little sweet & spicey.