Ask Dr. Potato

Mashed Potato Doughnuts

Q: Sometimes I make mashed potato doughnuts using a recipe I found on the back of a box on instant mashed Idaho potatoes and sometimes I want to use leftover mashed potatoes.  Any idea on how I can substitute one for another?
A: Thanks for using Idaho potatoes. For your question I asked LaWana Mencke who is the R & D Technician at Idahoan Foods for her comments as she is the expert when it comes to using convenience dried or dehydrated potatoes.The answer: Each 1/3 cup of flakes makes about ½ cup prepared, as per directions on bag or box.Here are two basic donut recipes from Idahoan:Idaho Potato Doughnuts2 pkg. active dry or cake yeast1/2 c. warm water (110-115° F.)1 c. sugar3/4 c. shortening or margarine1-1/2 c. prepared Idahoan® mashed potatoes, cold3 eggs, well beaten2 c. milk, scalded and cooled to lukewarm1 tbsp. salt1 tbsp. lemon extract6-8 c. sifted flourGlaze:Boiling water1 lb. powdered sugar1 tbsp. vanilla extract
  1. Dissolve yeast in warm water, set aside. Cream sugar and shortning, beat in cold potatoes and eggs. Add milk, salt and lemon extract. Mix in flour, adding just enough to make a soft dough. Knead well.
  2. Place dough in greased bowl, cover and let rise in warm place until doubled in bulk.
  3. Roll out dough to 1/2" thickness. Cut with well-floured cutter. Let rise uncovered about 30 minutes. Deep-fry in oil heated to 375° F. Drain on paper towel.
  4. To make glaze, gradually add enough boiling water to powdered sugar and vanilla to make a thin glaze. Drizzle over doughnuts. Yield: 4 dozen dougnuts.
Raised Donuts
  1. Heat deep fat to 375° F.
  2. Disolve 2 pkg. active dry, or cake, yeast in 1/2 cup lukewarm water. Set aside.
  3. Cream together 1 cup sugar, 3/4 cup shortening or margarine
  4. Add 1-1/2 cups cold IDAHOAN MASHED POTATOES and 3 eggs well beaten
  5. Scald and cool 2 cups milk
  6. Add to milk 1 tablespoonsalt and 1 tablespoon lemon extract
  7. Combine all ingredients -- mix well.
  8. Mix in 6-8 cups sifted flour
  9. Knead well -- adding just enough flour to make soft dough.
  10. Let rise until double in bulk. Roll out dough. Cut. Let rise until very light.
  11. Fry in deep fat. Drain on absorbant paper.
  12. Glaze -- 1 lb. powdered sugar, add boiling water for thin glaze, and 1 tablespoon vanilla.Yields 4 dozen
And several more from the Idaho Potato Commission:[caption id="" align="aligncenter" width="600" caption="Mashed Potato Donuts"]Mashed Potato Donuts[/caption][caption id="" align="aligncenter" width="599" caption="Lemon Crème Fraiche Idaho® Potato Doughnuts"]Lemon Crème Fraiche Idaho® Potato Doughnuts[/caption][caption id="" align="aligncenter" width="334" caption="Idaho® Potato Doughnuts (Fritter Style)"]Idaho® Potato Doughnuts (Fritter Style)[/caption]By the way, don’t you think we should start a campaign to call instant or dehydrated potatoes “dry potatoes”? After all, no one refers to dry pasta as dehydrated or instant.  It’s degrading… especially if you haven’t tried these lately. These are always a staple ingredient in my pantry at home for quick side dishes.