Basic Sourdough Bread

In an electric mixer with the dough hook, combine the flour, starter and salt, and knead until it no longer sticks to the sides or bottom of the mixing bowl. Place a lightly oiled bowl, turning to coat. Cover with plastic wrap and let dough rise in a warm, draft-free place until doubled in size, 1 to 1 1/2 hours. Turn out onto a lightly floured surface. Sprinkle lightly with flour and knead gently, removing any large air bubbles. Knead into a small circle, then shape into a tight ball, pinching the seams together underneath. Place on a well-floured board or baking peel, seam-side down. Cover with a kitchen towels and let rest until doubled in size, about 1 hour. Preheat a baking stone, if available, on the bottom rack of an oven at 400 degrees F. With a sharp, serrated knife, cut a large "X" or cross-hatch pattern into the top of the dough. Spray lightly with a mister and transfer to the baking stone (or place on a heavy baking sheet lightly dusted with cornmeal) and bake until golden brown and the bread sounds hollow when thumped on the bottom, about 60 minutes. (Sourdough should have a darker crust than other breads, so leave in the oven 5 minutes after you think it is done.) Remove the loaf from the oven and let cool on a wire rack for at least 30 minutes before serving.