Kale

Kale, a hearty green, is a nutritional powerhouse. It has frilly blue-green leaves, a nice toothsome texture that doesn’t go all mushy in the blink of an eye, and, most important, it has a pleasant, earthy flavor with just the faintest bitter bite. Kale is like cabbage with an attitude: a little peppery, a little sweet, with a slight mineral edge, perhaps, but none of the metallic quality of spinach.