Sourdough Sour HeelThe heel of a loaf of sourdough bread rests on a cast iron pan.Pan-tastic!A simple grilled cheese sandwich on a flat cast iron pan.Guinness Sourdough IngredientsIngredients for a loaf of beer-based sourdough.Sourdough Mise en PlaceIngredients for a beer-based sourdough set out on a countertop.Slice of SourA slice of sourdough bread rests on a cutting board.Proof of BreadA well-proofed loaf in a baneton.