At least once in your life, you really should try a homemade doughnut. Trust me.
I found a doughnut recipe in this Delightful Cooking booklet. I'm guessing it's from the 1920s.
Here is the doughnut recipe. Click the image to enlarge it.
1 cup sugar
1 tsp. salt
3 tbsp. Mazola
1 cup sour or buttermilk
5 cups sifted pastry flour
1 tsp. baking powder
1/2 tsp. baking soda
1 tsp. mace or nutmeg
Thoroughly mix first five ingredients. Sift together flour, baking powder, soda and spice, and add to first mixture. Mix thoroughly but lightly and roll out on slightly floured board. Cut with doughnut cutter and fry in deep hot Mazola.
If sweet milk (that is, whole milk) is used (instead of buttermilk), eliminate baking soda and use 4 tsp. baking powder.
Crullers may be made by using above recipe — after rolling out the dough, cut in strips, twist and fry in deep Mazola.