 Caesar salads today, like at the New Orleans restaurant Boucherie, often include anchovies. But you'll also find them with kale, bacon, kimchi, all kinds of trendy ingredients. And that's why the Caesar endures, says chef Nathaniel Zimmit. The salad is a showcase for innovation, yet rooted in resourcefulness and kitchen creativity. The Caesar is a salad for today, and maybe for always. Netta Ulibi, NPR News.