Buttermilk pie is a custard-like pie. Originally from the United Kingdom, it is now a traditional pie of the southern United States. It is similar to, and sometimes confused with, chess pie but it does not include cornmeal. The basic filling consists of a mixture of sugar, butter, eggs, buttermilk and wheat flour. Variations on the recipe may include flavorings such as vanilla, lemon zest and nutmeg. Buttermilk pies are made with a pie crust.