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The Super Herb
Cost: Less than $2 for a bunch

We're not sure when, exactly, parsley got relegated to garnish status, but Rose says it deserves to be the most-used herb in any cook's repertoire. Go for the Italian, flat-leaf kind (as opposed to the curly variety, which truly is better as a decoration). A bunch will keep for at least a week, if not longer (whereas other similar herbs, like cilantro, quickly become slimy). Parsley's fresh, bright flavor makes good-for-you, if potentially boring, foods (like grilled chicken or fish) taste much more flavorful, and if you chop it finely, it can bring some pizzazz to tired green salads.