The only thing better than the crispy coating on well-prepared fried chicken is more of it. At least half of all fried-chicken love goes toward the crust, and although the moist, juicy meat inside is great, it wouldn't seem nearly as good if it didn't contrast with a crispy crunch.
You have to modify the standard breading procedure and choose the best fat to get a crust that doesn't overpower the chicken, and fries up crisp instead of chewy. This means using both a light wet ingredient, such as buttermilk, and a thicker wet ingredient, such as frothy egg wash, and trading the shortening for light oil.
Cover the chicken pieces with cultured buttermilk, or two cups per chicken, in a baking dish or food storage container. Marinating in buttermilk improves tenderness and adds a bit of tang to the flavor, but is optional.
Cover the container with food wrap. Marinate the chicken for about two hours on the bottom shelf of the refrigerator.
Pour an inch or two of all-purpose flour in a shallow dish. Season the flour, if desired, with 1 tablespoon of kosher salt and 1/2 tablespoon of freshly ground black pepper per cup of flour, and mix it with a whisk in a mixing bowl.
Beat 3 eggs with 1/3 cup of cold seltzer water per chicken until frothy and pour it in a shallow dish. Pour 2 cups of buttermilk in a shallow dish if you didn't marinate the chicken.
Remove the container of chicken from the fridge. Remove the chicken pieces one at a time from the buttermilk and coat them all over with flour.
Dip the floured chicken pieces in the buttermilk and let the excess drip off. Coat the chicken with flour a second time.
Dip the chicken pieces in the egg wash and coat them with flour a third and final time.
Place the breaded chicken on a wire rack set on a baking sheet, or leave them in the dish of flour while you heat the oil. The crust sticks to the chicken better if you let it sit at room temperature for a few minutes.
Fill a 4-inch deep cast-iron skillet half full of high-temperature oil. Canola, soybean, extra-light olive, peanut and sunflower oil all have high smoking points.
Place the skillet on the stove and set the heat to medium. Heat the oil for 20 minutes.
Place the chicken in the hot fat using long-handled tongs or a slotted deep-frying spoon. You can place the chicken in the oil with your hands if using a 4-inch deep skillet.
Fry the wings until golden brown, about 12 minutes. Remove them from the fat with tongs and place them on a plate lined with paper towels to drain.
Fry the breasts until golden brown with an internal temperature of 165 degrees Fahrenheit, about 15 minutes. Check the temperature by inserting a meat thermometer through the thickest part of the breast without touching the bone. Drain the breasts on a plate lined with paper towels.
Fry the legs and thighs until golden brown with an internal temperature of 165 F, about 18 minutes. Drain the thighs and legs on a plate lined with paper towels. Gently blot the chicken pieces with paper towels to remove the excess oil.