Meghana Hemphill, my best friend from grad school, grew up in New Orleans. I’ve spent countless vacations with her and her family, consuming copious amounts of Cajun and Creole food. It was on one of these trips that I tried my first oysters Rockefeller, which immediately became a favorite way to prepare oysters. Food-grade rock salt is available at most grocery stores and is sometimes labeled “ice-cream salt.”