Cornbread leavened and flavored by wild fermentation — a cornmeal batter soured overnight (often with buttermilk or clabber and a sourdough starter) before baking in a hot cast-iron skillet. The older, tangier ancestor of baking-soda cornbread.
Before boxed mixes and reliable baking powder, Southern cooks soured their cornmeal overnight — fermentation was simply how bread rose. Sourdough cornbread reconnects to that older, healthier practice that thrift and tradition had quietly perfected.
Fermenting the cornmeal batter before baking does real metabolic work: it lowers the glycemic load, breaks down phytic acid to free up iron, zinc, and magnesium, and predigests some of the starch — so sourdough cornbread raises blood sugar less than the quick baking-soda version. Built on whole stone-ground cornmeal, it keeps the bran and germ fiber intact. Skipping or minimizing added sugar (true of the older tradition) keeps it diabetes-friendlier than today's cake-sweet cornbread. The fermentation also reduces the baking-soda load, helping with sodium for hypertensive eaters.
The night before, mix stone-ground cornmeal with buttermilk, clabber, or a spoon of sourdough starter and let it sit at room temperature 8-12 hours until pleasantly sour and bubbly. In the morning stir in egg, a little fat (bacon grease or oil), salt, and a small amount of baking soda to lift it. Pour into a screaming-hot greased cast-iron skillet and bake at 425°F for 20-25 minutes.
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