Turkey drumsticks are a great meal for the entire family; kids like them because they can eat them with their hands, and adults enjoy their rich flavor and moist texture. In this recipe, the buttermilk not only adds a distinctive taste but also works well as a marinade, tenderizing the meat. The combination of buttermilk, dijon mustard, honey, and herbs imparts a nice tang and freshness to the turkey, and the barbecue basting sauce adds a deep color and rounds out the flavor.