There are about 150 types of kale, differing in flavor, texture, and appearance. The three most popular ones in stores are ...

Curly kale is the most commonly available type. It is usually bright green, dark green, or purple, with tight, ruffled leaves that are easy to tear.

Kale is a leafy vegetable belonging to the same family as cabbage, cauliflower and Brussels. This week's vegetable, kale, is also called borecole, which means "farmers cabbage" in Dutch.

The blue-green leaves are ruffled on the edges, similar to curly leaf parsley.It’s not often found in grocery stores, but it’s one of the best types of kale for a raw salad because of its ...

348 mg of potassium “Kale also provides carotenoids, antioxidants (like lutein, for eye health), vitamin E, vitamin K, and more,” Caspero continues.

An employee harvests curly green kale at the organic farm of Moonacres, in Fitzroy Falls, New South Wales, Australia, on January 15.

An employee harvests curly green kale at the organic farm of Moonacres, in Fitzroy Falls, New South Wales, Australia, on January 15. Brendon Thorne/Bloomberg/Getty Images CNN — ...