Who needs yeast packets to make bread?

Not me! I've been having great success making bread that is leavened only by sourdough starter. 
There is a great bread recipe called "Almost No-Knead Bread" from Cooks Illustrated that I love, but I love using real sourdough even more than the CI recipe for faux-sourdough flavor, so I gave the recipe a sourdough makeover. Granted, the time savings of the CI recipe are gone. Baking with sourdough as the only leavening is for those who like it a bit old-school.

My recipe assumes that you already have a sourdough starter available. If not, you'll need some time to refresh one you've received from someone you know or to start one from scratch. There are several from-scratch processes described in the books The Art of Fermentation and Wild Fermentation by Sandor Ellix Katz, Sourdough Cookery by Rita Davenport and Flour Water Salt Yeast by Ken Forkish.

Also assumed: that you own a cast-iron Dutch oven with a lid.

Crusty Sourdough Bread
yield: 1 loaf, approximately 1 pound

Step 1: Refresh the starter 
Stir 1/4 cup unbleached all-purpose flour and 2 Tbsp water into the starter. Leave the container out on the kitchen counter several hours until starter is bubbly and increasing in size. 

Step 2: Mix up the recipe
1 cup unbleached all-purpose flour (5 ounces)
1 cup unbleached bread flour (5 ounces)
1 cup whole-wheat flour (5 ounces)
1 1/2 tsp salt
1 cup sourdough starter
1/2 cup water, plus a little more if dough is dry
 
In large mixing bowl, mix the dry ingredients, then stir in sourdough starter with enough water to make the dough into a shaggy-looking ball. Start with 1/2 cup water and add a little more water if dough is dry and not coming together.

Cover bowl with plastic wrap and leave out overnight.

Step 3: Prepare for rising 
Line a flat pasta bowl, a bread basket or an 8-inch cast-iron skillet with parchment paper and grease the paper with cooking spray. Remove your plastic wrap from the mixing bowl and spray one side with cooking spray.

Step 4: Knead and shape
Spread flour over your kneading surface and knead your dough just 10-15 turns until it is smooth and elastic. Gently pull sides down under the loaf to make a ball, squeeze bottom seam together and place loaf seam-side down in the parchment-lined bowl//basket/skillet. Cover loosely with the plastic wrap, oily side down. Allow to rise until nearly doubled in size, about 1 1/2 to 2 hours. About 1/2 hour before the end of rising, turn on the oven to 500 degrees Fahrenheit with a cast-iron Dutch oven (lid on) inside it on the lowest rack.

Step 5: Baking a crusty loaf
Sprinkle the loaf with flour, then slash a 1/2 inch-deep line across the loaf with a sharp knife. Turn on the kitchen exhaust fan, if you have one, before the next part. Carefully bring out the Dutch oven, open the lid, pull up the corners of the parchment paper around your loaf, place the paper with the loaf in it inside the Dutch oven. Cover carefully with lid, turn oven temperature down to 425 degrees Fahrenheit and bake 30 minutes. 

At 30-minute mark, remove lid and continue baking loaf in Dutch oven another 20-25 minutes until it is well-browned and center temperature of loaf is 210 degrees Fahrenheit. Cool finished loaf on a wire rack.

Step 6: Eating and storing
I'm assuming that you will already start to eat the bread the same day it is made, as soon as it is cool. Who could wait longer? I won't tell you what to put on your bread, but storage is a piece of cake. Turn the cut side of the loaf down on a cutting board.

Alternatively, you could wrap the whole loaf in foil. If the crust is getting tough and losing its crispness, it can be re-crisped in the oven or toaster. This bread is still delicious on Day 2 and makes great toast for a couple days afterward. 

Keeping a sourdough starter: Once you've got your starter going, you can store it in the refrigerator in an airtight container between uses. I feed mine at least once a week by mixing in 2 Tbsp unbleached all-purpose flour and 1 Tbsp water. I feed it more, still in a ratio of 2 parts flour to 1 part water, if I will be baking often. If I baked nearly every day, I'd just leave the starter container out on the counter to keep those yeasts really active. If I know I won't be baking for a while, but the starter is getting close to filling the container, I discard some before the next feeding.

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