Combine the buttermilk, garlic, and hot sauce and stir well. Submerge the chicken pieces in the buttermilk. Let soak for at least 2 hours in the refrigerator, but preferably overnight.
Preheat the oven to 350 degrees F.
Sift together the flour, salt, and pepper. Heat the oil and butter over medium heat in a large skillet until the foaming of the butter begins to subside. Pull the pieces of chicken out of the buttermilk 1 at a time. Let the excess buttermilk drip off, and then coat the chicken in the seasoned flour. Coat well and shake off any excess flour. Place the chicken skin side down into the hot oil. Cook until nicely browned, 10 to 12 minutes per side.
Place the chicken on a sheet tray and bake in the oven for 10 to 15 minutes. You should see the juices of a thigh or leg run clear when you pierce the chicken with a fork.
This recipe was provided by a chef, restaurant or culinary professional. It has not been tested for home use.
Recipe courtesy Gillian Clark, The General Store and Post Office Tavern, Silver Springs, MD