What is the history of buttermilk pie?

Buttermilk pie has its roots in early American cooking, particularly in the Southern United States, where it emerged in the 19th century. It was a practical way to use leftover buttermilk, a common byproduct of butter-making, and typically features a simple filling of buttermilk, sugar, eggs, and flavorings like vanilla or nutmeg. The pie showcases the resourcefulness of early American cooks and has remained a beloved dessert, often associated with Southern hospitality and tradition. Over time, regional variations have developed, but the pie's creamy texture and sweet-tart flavor have kept it popular.