AdvertisementAs Bagged Salad Kits Boom, Americans Eat More Greens06:52Download AudioResumeJuly 12, 2016Dan CharlesAllison AubreyfacebookEmailA Caesar salad kit. Americans buy twice as many packages of bagged salad greens as heads of lettuce these days. Is the bagged stuff just as good? If it gets you to eat more leafy greens, yes. (Morgan McCloy/NPR)