This article was produced by National Geographic Traveller (UK). The Amish are fond of a sweet treat, Fannie Yoder tells me as we wander the aisles of her delicatessen in Tennessee’s Amish Country.

To the outsider, the Amish way of life is intriguing and sometimes puzzling. Amish customs can seem contradictory. Although the Amish chief mode of transportation is horse and buggy, sometimes they ...