In the American South, many people have fond memories of a pot of collard greens simmering on the stove for hours, seasoned with a ham hock and stirred by a parent or grandparent. Cousins to cauliflower and broccoli, collards are a hearty green known for their robust, slightly bitter taste and the rich, nutritious “pot liquor” they produce when cooked. These greens and their liquor have been lauded for generations, but few in the South know that there’s more than one kind of collard green. Even fewer know that there…
