Try this Buttermilk Doughnuts recipe
Allowing the mixed dough to rest for five to ten minutes is the single most critical window in this preparation, as it permits the proteins in the flour to hydrate fully without requiring additional dry powder that would yield a dense crumb. Buttermilk supplies lactic acid, which reacts with the baking soda to generate carbon dioxide bubbles, creating the necessary lift inside the hot fat fryer maintained at 350 degrees Fahrenheit. Spices such as ground nutmeg and ginger complement the sour dairy profile, cutting through the richness of the fried dough while anchoring the flavor in traditional New England baking styles. Maintaining the oil at a shallow depth of one inch prevents the raw centers from remaining undercooked while the exterior browns too rapidly.
Working the dough requires a delicate touch and minimal flour dusting on the board to prevent toughness. Fry the shaped rings for approximately ninety seconds per side until golden brown, monitoring the thermometer closely to keep the fat from scorching or cooling down. Overcrowding the pan causes the oil temperature to drop precipitously, resulting in grease absorption rather than proper frying.
Cooked fried pastries begin to stale rapidly due to starch retrogradation, losing their crisp exterior within hours of preparation. Unglazed fried rings can be frozen successfully for up to one month in airtight bags and subsequently recrisped in a 350-degree oven for five minutes before serving.