No-Knead Sourdough Bread

Make the biga

1. In a small bowl, mix together the water and the refreshed starter. Add the flour and a few grains of salt. (Use just a tiny pinch, please, as a bit of salt will speed up fermentation, but a heavy dose will slow it down.) The dough will look lumpy, uneven, and small. And that's okay.
2. Cover the bowl and wait up to 24 hours for it to triple in size. Don’t be dismayed if nothing happens for the first 12 hours—it takes a while to get going, but once fermentation starts, it will take off, and is likely to grow more in the final 4 hours than it did in the first 16.
3. When you think the biga is ready, poke at it and taste it—a fully fermented biga is pleasantly tangy with a fantastically airy, spongy, viscous structure. It will feel tacky and taste and smell deliciously yeasty with a gentle smack of tartness, a bit like beer but without any bitterness. At this point it’s ready to use. (You may note color changes in the big as the top layer dries out and oxidizes a bit; this is perfectly fine and to be expected.)
4. The biga will keep at room temperature (below 72°F | 22°C) for up to several days in a covered container or several weeks in the refrigerator.

Make the pane bianco

1. In a 1 1/2-quart bowl, whisk the water and biga together until the biga dissolves, about 20 seconds. Add the flour and salt and, using a large spoon or spatula, rapidly and vigorously mix everything together until just combined, 1 to 2 minutes. Resist the urge to tidy it or consolidate it.
2. Scrape the dough off your spoon and from the edges of the bowl and pile it on top of the dough in the bowl. Cover the bowl with a plate and let it sit at room temperature for 20 minutes.
3. Lightly flour the edges of the dough and use a dough scraper or rubber spatula to turn the dough by folding the edges of the dough into the center. Cover again and let sit until the dough has doubled in size and is sweet and yeasty smelling, 8 to 20 hours (the colder the weather, the longer it will take).
4. When the dough is ready, it will glisten and shimmer and you will see a few bubbles beneath the surface. It should feel light, springy, and curiously soft to the touch. The dough will also have a gassy feel, as if it were inflating...which, in fact, it is. When you pull a strand of it up and away from the bowl, it will thin out as you pull it and become nearly transparent—the classic “windowpane” test. And when it’s really ready to shape, the dough will have developed self-suction and will stick to things—your finger, the bowl, a rubber spatula—but when you pull away, rather than leave a mess, it will come away quickly and cleanly with snap and enthusiasm. When the dough reaches this point of beautiful springiness, it has reached the apex of its elasticity—and is ready to shape.
5. Flour the edges of the dough again, scrape from the side of the bowl, and fold them into the center of the dough. Scrape the dough off the bottom of the bowl and flip it over. Let the dough rest at room temperature, covered, for 20 minutes or until the dough shows signs its growing evidenced by a slight but noticeable expansion.
6. Line a rimmed baking sheet with parchment paper.
7. Gently fold the sides of the dough into the middle of the dough and lift the dough from the bowl. Throw a handful of flour into the bowl. Working quickly and gently, pull the dough into a taut ball—the tension is what will allow the dough to hold its shape. You need to work quickly so the dough doesn’t stick to you. If it starts to stick, dip it in the floury bowl. Pull the sides of the dough down and into the bottom of the dough. You are trying to make the surface of the dough as taut as you can without tearing it—in about 30 seconds or less. (Handling the dough any more than this is likely to damage the airy, delicate structure within.) [Author’s Note: Imperfections are beautiful. It’s always better to stop with an imperfect round than to keep pulling at it until it tears in a grim attempt to achieve perfection.]
8. Place the dough, seam side down, on the parchment paper. Loosely cover the dough with a towel. Let the dough rest at room temperature until it’s doubled in size, 1 to 3 hours.
9. Place a large pot and a tight-fitting lid side by side in the oven on the middle rack and preheat the oven to 500°F (260°C).
10. Use oven mitts to carefully remove the pot from the oven and uncover the dough. Very gently pick the dough up and lower it into the pot. Use a small serrated or paring knife to score the dough with a single slash. Cover the pot immediately and bake for 40 to 45 minutes.
11. Take the lid off, carefully remove the parchment, and bake until the crust has attained at least a rich golden color, 5 to 10 minutes.
12. When the bread comes out of the oven, you’ll know it’s done baking because it will feel lighter, will sound hollow when you knock on the bottom, and the crust begins to crackle quietly like logs in a fire. Set the loaf on a wire rack to cool.
13. If you can bear to, wait an hour or so before cutting into it, as the interior will continue to cook as it cools.