Sweet potato pies, a beloved staple of North American fall and winter cooking, are baked out of mashed or blended sweet potatoes mixed with condensed milk, eggs, and spices such as cinnamon, nutmeg, cloves, mace, and allspice. Few Americans and Canadians would think of such a dish as traditionally English, yet many cookery books written in England during the seventeenth century show that English people made and enjoyed pies like this. We decided to try one of these recipes, found in the Folger collection, during our recent Pi Day celebration.
