 If relatively soft water is being used, more salt should be added in order to strengthen the gluten network of the dough, but if not enough salt is added during the baking process, the flavor of the bread will not be appealing to consumers.Doughnuts are unhealthy, though some are less so than others.According to "Prevention Magazine", doughnuts made from enriched flour provide some thiamine, riboflavin, and niacin, along with some fiber, but they are high in sugar and calories.