Toss the drumsticks in the seasoned flour. Dip in the buttermilk mixture and in the flour again. Set aside on a plate. Fry 5 to 6 drumsticks at a time for about 12 minutes or until a thermometer inserted in the centre of the drumstick reads 82 °C (180 °F). Drain on the baking sheet. Let cool for 5 minutes before serving.