Southern corn bread is more savory that northern styles of corn bread, which tend to be more sweet and cake-like.
Add the bacon fat to a 9" cast-iron pan and transfer pan to an oven set to 400.F.
While pan is heating, whisk together all dry ingredients in a large bowl.
In a small bowl, beat together the egg and buttermilk.
Mix wet ingredients into dry ingredients until just combined. Stir in melted butter.
Pour batter in to hot skillet. Bake at 400.F until edges are beginning to brown and a tester inserted into the middle comes out clean.
Let bread rest in skillet to pull away from edges before serving.
Made with regular milk instead of buttermilk. Had much more structure than I expected for pure corn meal.