Think Southern-fried chicken, and chances are the next words that come to mind are “secret herbs and spices.’’ To me, that’s Southern-fried baloney. Prolonged immersion in very hot grease is not a method that coaxes out bouquet; the only elements likely to survive are garlic and cayenne. But spicing aside, the sine qua non of good fried chicken certainly is the crust, the best being a simply seasoned flour- or cornmeal-based coating delicately but thoroughly welded to the skin in a crisp, delicious synthesis. Biting into good fried chicken produces what I call the “howdy moment’’ - mouth greeted by a smooch of warm, clean grease, then toasty-nutty crunch, then mild, ingratiating poultry flavor.