[1][2] A chain of Spudnut Shops was established across the United States in the 1930s before declining to a few dozen more recently.

[8] In the late 1930s, Vernon Rudolph began selling Krispy Kreme doughnuts, using a recipe containing potatoes.

[9][10] A chain of Spudnut Shops was established and spread to more than 500 locations in the United States before being thinned out to around 50 in the mid-2000s.

[11][12] The originating company eventually declared bankruptcy, but independent stores remain.

[17] Potato doughnuts are prepared by mixing instant mix or already prepared mashed potatoes in a bowl with eggs and other ingredients, ranging from baking powder to a small amount of flour.