What's in a Donut...
Does anyone know ingredient-wise the difference between old-fashioned donuts (with the knob like pieces on the outside) and a buttermilk bar? Someone once told me that both have buttermilk in them, but I don't think that's true.
well, i'm not sure i can totally answer your question, but according to my two favorite cookbooks from the early '30's crullers-which we would know as a buttermilk bar, or simply as a cruller has only egg, butter, flour, sugar and spices.
the closest recipe i can find for an old fashioned is called a sour milk doughnut and has soured milk, baking soda, egg, sugar, and shortening.
hope that helps!