Farmers markets are the best place to get this member of the cabbage family. In addition to the usual berries at the markets, today I added three kohlrabi for a special treat.
Grandpa had a large garden in the farming village of Morrison. In that garden was the kohlrabi. Not sure if he raised kohlrabi every year. However, I do remember my first taste (as a pre-teen) and loved it. For me, sliced with a little salt is a great treat. Considering how infrequently they can be found, the treat is better than a chocolate chip cookie.
Overripe, they are woody -- and -- not having rodent teeth, they are inedible.