Every Fourth of July, Americans fire up the grill and gather to watch fireworks in celebration of the nation’s birthday, the anniversary of the signing of the Declaration of Independence. But unbeknownst to many, the day is something of a dual holiday — because July 4 also marks the anniversary of the creation of the illustrious Caesar salad, a mouthwatering dish that splits the difference between side salad and main course, where romaine lettuce, croutons, Parmesan cheese, and of course, Caesar dressing come together in briny...