This peppery green, also known as rocket, is a member of the mustard family.
Store arugula in a plastic bag, in the refrigerator. It'll keep for a week or more. Please note that we typically don’t wash the salad greens we pack for you unless they’re very dirty, because they store better unwashed. If you choose to wash your salad greens, invest in a salad spinner so you can be sure to get them truly dry. (A wet salad always disappoints.)
Arugula is delicious in salads, added on top of pizza, made into a pesto, or lightly wilted under an over-easy egg.