As I was working on this book, I found that most of my cake and quick bread recipes used the same ratio of flours. So I thought it would just be easier to make one master mix to have on hand any time you are in the mood to bake, rather than having to measure several flours each time. Make this in large batches and then store it in an airtight container in a cool place for up to 3 months. It will make your baking experience much faster, easier, and neater. I keep my mix in the freezer to ensure its freshness. Just make sure to thoroughly whisk it every single time before using it.