Potato doughnut

A potato doughnut, sometimes called a spudnut, is a type of doughnut, typically sweet, made with either mashed potatoes or potato starch instead of flour, the most common ingredient used for doughnut dough. Potato doughnuts tend to be lighter than all-flour doughnuts, and are prepared in a similar way as other doughnuts. A chain of Spudnut Shops was established across the United States in the 1940s before declining to a few dozen more recently. Fried ube dough is also eaten in East Asia, including the world's most expensive doughnut, the Golden Cristal Ube, which cost $100 each. Much like flour doughnuts, potato doughnuts are often eaten with coffee.

Description: Wikipedia — Potato doughnut, CC BY-SA 4.0