Washing lettuce is one of the easiest things to do and you would be surprised at what lands in the bottom of the bowl! First, chop off the stem and separate the leaves. Place the leaves in a bowl of cool water, leave them soak for a minute or two then shake them off. Place the leaves one at a time on a paper towel. If you are going to use them right away blot dry with more paper towels, if not roll in the paper towels and store in a plastic bag. Lettuce cleaned this way should last about a week.