If you have a wilting bunch of cilantro or parsley you can perk it back up by cutting 1/2″ off the stems and placing the bunch in a glass of water, just like a bouquet of flowers. Place the glass in the fridge and please, try not to knock it over.
Alternately, you can process the cilantro or parsley in a food processor with a small amount of olive or vegetable oil and spoon the paste into an ice cube tray. Once frozen pop the cubes out and into a freezer bag for storage. These cubes are great for adding to soups, sauces, and marinades where the herbs’ appearance is not an issue.