I use The Way far more than Mastering. (Wow, sounds kinda Zen.) One has to do a brief mental
revision with Mastering -- using appliances where Julia did everything by hand, updating cuts of meat, and so on. But some of those recipes, boy oh boy, there's just no "modern" version. That cassoulet tops any recently printed cassoulet recipe. Come to think of it, that's about the only recipe in Mastering I keep going back to. My Way to Cook, on the hand, is porcupined with flags, for cheese soufflé, French bread, madeleines, custard sauce and crème caramel, spongecake ...