I saw it happen several times last week at the farmers market: Shoppers would spy a bunch of kohlrabi, pick it up, smiling in wonderment, snap a picture for Instagram, then put it back. I understand.

Kohlrabi is a vegetable that’s related to the cabbage family. It’s widely consumed in Europe and Asia and has gained popularity around the world. The health benefits and culinary uses of kohlrabi are ...