7-Day Bread Recipe: Slow-Fermented Crust With Airy Interior

This 7-day bread recipe transforms simple flour and water into an artisanal loaf with a crisp crust and open crumb—no fancy equipment required. The secret lies in patience: letting nature and time develop complex flavors through slow fermentation.

I’ve perfected this method over years of baking, and the results speak for themselves: a loaf so tender and flavorful, it rivals anything from a bakery.

The process begins with a lively sourdough starter, which you’ll feed daily for five days before incorporating it into your dough. This extended fermentation breaks down gluten and sugars, creating that signature airy interior and nutty depth.

Unlike quick breads, this method demands attention but rewards you with a loaf that improves with age—ideal for sandwiches, toast, or serving alongside soups.

By day seven, you’ll shape your dough, proof it overnight, and bake it to a golden brown with a crackling crust. The texture is what makes this bread special: crisp on the outside, soft and open on the inside, with a flavor that builds with each bite.

Whether you’re a beginner or an experienced baker, this recipe delivers restaurant-quality results at home.

Ready to embrace the rhythm of slow baking? This method isn’t just about making bread—it’s about mastering a timeless tradition. Let’s get started.

Ingredients for 7 day bread

Simple ingredients, extraordinary patience—this is all you need for restaurant-quality bread.

The flour is your foundation, so King Arthur or Caputo make all the difference—they hold up better to slow fermentation. I grab mine from King Arthur’s website or my local Whole Foods bulk section, but any high-protein flour works. The sourdough starter? Feed it daily for five days before using—it should be bubbly and smell tangy. If you're short on time, King Arthur’s sourdough mix is a solid shortcut. The yeast might seem redundant, but it kickstarts fermentation while the sourdough builds flavor. Fresh yeast from Trader Joe's stays potent longer than the tiny packets.

No sourdough starter? Instant yeast plus a splash of vinegar can mimic the tang, though it won’t be as complex. Running low on butter? Olive oil or coconut oil works, but butter gives that unmistakable richness. The eggs add structure, but if you're vegan, flax eggs (2 tbsp ground flax + 6 tbsp water) hold up surprisingly well. The ice cubes might seem odd, but they’re key for that cold water bath before shaping—it tightens the gluten for a cleaner crumb. Pro tip: measure your flour by weight if you can—12 cups is roughly 1.5 lbs, but scooping can pack it too tightly.

This dough keeps beautifully. Shape it into a loaf, cover with a damp towel, and let it proof in the fridge overnight—up to 24 hours for even more flavor. The shaped loaf freezes for 3 months if you wrap it tightly in plastic and foil. For best results, bake within 2 days of shaping. The crust stays crisp for 3 days if stored in a bread box, but the interior stays softest when eaten within 2 days. Leftovers? Toast them—it’s the best way to revive stale bread.

Step-by-step instructions for slow-fermented artisan bread

Here's how to craft a bread with a crisp crust and light, airy interior through patience and precision.

In a large mixing bowl, dissolve the 0.5 cup granulated sugar in 1 cup of the 3 cups lukewarm water. Sprinkle the 0.25 oz active dry yeast over the sugar water and let it sit for 5-10 minutes until foamy. Meanwhile, in a separate bowl, combine the 1.5 cups sourdough starter with the remaining 2 cups water. Let both mixtures rest at room temperature for 1 hour—this ensures the yeast and starter are fully active and ready to work.

I always check for activity by looking for bubbles in the yeast mixture and a slight rise in the sourdough starter. If they're not bubbly after an hour, give them another 10 minutes—this step is critical for developing flavor and structure in your bread. The sugar helps activate the yeast, while the sourdough starter adds depth and tang that you just can't get with commercial yeast alone.

In the bowl with the yeast mixture, add the 12 cups unbleached all-purpose flour, 1.5 tsp sea salt, and the sourdough starter mixture. Using a wooden spoon or dough whisk, stir until a shaggy dough forms. Once combined, knead by hand for 10 minutes until the dough becomes smooth and elastic. If it's too sticky, add 1 tablespoon of flour at a time until it pulls away from the bowl.

Transfer the dough to a lightly oiled bowl, cover with a damp towel, and let it rise at room temperature for 2 hours. After this initial rise, perform a series of daily stretch-and-folds for 5 days. Each day, wet your hands, grab one side of the dough, stretch it upward, and fold it over itself. Rotate the bowl and repeat this process 4-5 times per day. This builds gluten gradually and develops that signature open crumb structure. On the 6th day, let the dough rest uncovered at room temperature for 12 hours to develop flavor.

On the 7th day, turn the dough onto a lightly floured surface and shape it into a round loaf. To do this, gather the dough into a ball, tuck the edges underneath, and roll it gently to create surface tension. Place the shaped dough seam-side up in a bowl lined with a damp towel, cover, and refrigerate for 12-24 hours. This cold proofing step is what gives this bread its incredible texture—the slow fermentation allows the gluten to relax and the flavors to meld beautifully.

I like to do this in the evening so the dough is ready to bake the next morning. The cold temperature slows down yeast activity just enough to prevent overproofing while still allowing the dough to rise slightly. This is where the magic happens—patience pays off with a bread that's light yet substantial, with a crisp crust and an open, airy crumb.

Preheat your oven to 450°F with a baking stone or inverted baking sheet inside for 1 hour. While the oven heats, place the dough on a piece of parchment paper dusted with 0.25 cup cornmeal. Score the top of the dough with a sharp razor or bread lame by making a ½-inch deep cross—this helps control the oven spring and gives the bread its classic look.

Transfer the dough (with parchment) to the hot baking stone and immediately pour 0.5 cup ice cubes into a small metal bowl, then place it in the oven. The steam from the melting ice creates a perfect environment for that crisp crust and tender crumb. Bake for 25-30 minutes until the bread is deep golden brown and sounds hollow when tapped on the bottom. If the crust starts to darken too quickly, tent the bread with foil to prevent burning.

Remove the bread from the oven and let it cool on a wire rack for at least 1 hour before slicing. This resting period is crucial—it allows the steam inside the bread to escape, preventing a gummy texture. The crust will firm up as it cools, and you'll be rewarded with that satisfying crack when you break into it.

Slice the bread and admire the open crumb structure—each slice should be light and airy with a crisp, shatterable crust. The flavor will be complex, with a subtle tang from the sourdough starter and a satisfying depth from the slow fermentation. Serve it warm with butter, or save slices for toast the next day. This bread keeps well for 3-4 days at room temperature, wrapped in a clean kitchen towel to maintain freshness.

Pro cooking tips for 7 day bread

Stretch-and-Folds

This is where the magic happens—daily stretch-and-folds for 5 days build gluten strength and create that signature open crumb. Wet your hands, grab one side of the dough, stretch it upward, and fold it over itself like a letter.

Rotate the bowl and repeat 4-5 times per day. I do this first thing in the morning and before bed to maintain consistency. The dough should feel smoother and more elastic with each session. 💪

Cold Proofing Secrets

Never skip the 12-24 hour cold proof—it's what transforms good bread into extraordinary. Place your shaped dough in the fridge overnight, seam-side up. The cold slows yeast activity just enough to prevent overproofing while allowing flavors to deepen. Pro tip: Use a damp towel in the bowl to prevent drying. I always set a timer so I

Scoring Like a Pro

Your ½-inch deep cross should be sharp enough to cut through the dough but not tear it. Use a razor blade or bread lame at a 45-degree angle for clean cuts. The score should be ½-inch deep—too shallow and it won't control oven spring properly. I like to make a quick "X" shape to create four equal sections that rise beautifully. 🔪

Steam is Key

That ½ cup ice cubes in the oven isn't just for show—it creates critical steam that develops your crust. As the ice melts, the steam builds in the oven, creating the perfect environment for a shatterable crust while keeping the interior tender.

Place the ice in a small metal bowl on the oven rack immediately after loading your bread. 💧

Oven Spring Control

Watch for oven spring—that dramatic rise when you first put bread in a hot oven. For this recipe, you want controlled spring, not explosive. If your dough rises too quickly, it can collapse.

To prevent this, bake at 450°F but avoid opening the oven door for the first 15 minutes. If the crust browns too fast, tent with foil to protect it while maintaining steam. 🌡️

Cooling Matters

Resist the urge to slice immediately! Let your bread cool on a wire rack for at least 1 hour—this allows steam to escape and prevents a gummy texture. The crust will firm up as it cools, and you'll hear that satisfying crack when you finally break into it.

I often make tea while waiting, as this is the most tempting part of the process. ☕

Frequently asked questions