What is arugula?

United States
February 27, 2010 4:07am CST
I have never tasted or worked with arugula before. I am wondering if it is a salad green for salads or a fresh herb to flavor dishes. I also wonder where does arugula come from, and why is it so popular in cooking? I bet it has good vitamins and nutrients, too, but I am not 100% positive on this one. I am just leery to try new foods, but at the same time, I don't know what I am missing (till I try it). Have you cooked with arugula? How did you like the taste of arugula?
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