RECIPE: Shepherd’s Pie Twice-Baked Potatoes
https://whatscookingamerica.net/History/PotatoHistory.htm
https://www.jamieoliver.com/news-and-features/features/10-things-you-didnt-know-about-shepherds-pie/
https://idahopotato.com/recipes/shepherds-pie-twice-baked-potatoes