Yuck! There’s nothing worse  than opening a bag of lettuce  and finding brown spots. It’s not just that it’s icky. Greens  are expensive—especially  those prepackaged mixes!  What a waste of money! But there’s something you can do  to lettuce, kale, mustard greens or  any salad green to keep them fresh  and crisp. All you need is a spoon.  And here’s the scoop... Just put a stainless steel spoon (or any piece of silverware) into  the container. That’s all there is to it! Really.