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This authentic San Francisco sourdough bread recipe delivers the signature open crumb and crispy crust that made Tartine Bakery famous. The secret lies in a well-fed starter, precise hydration, and the Dutch oven's steam magic—techniques that transform simple flour and water into artisanal perfection.
I've perfected this method over years of baking, ensuring every loaf develops that coveted tangy flavor and airy interior that defines true SF sourdough.
The process begins with your starter, which should be active and bubbly before shaping. With a hydration ratio of 70%, this dough develops a light, open crumb structure when baked properly. The Dutch oven creates the ideal steam environment, giving you that signature crispy crust while keeping the interior tender.
Unlike commercial sourdough, this recipe focuses on hand-shaping and controlled fermentation for maximum flavor development.
What sets this apart is the attention to detail in every stage—from starter maintenance to final scoring. The result is a loaf with a golden-brown crust that shatters when broken open, revealing an interior filled with large, irregular holes.
This isn't just bread; it's a labor of love that captures the essence of San Francisco's baking tradition in your own kitchen.
Whether you're a seasoned baker or new to sourdough, this recipe breaks down each critical step while addressing common challenges like tanginess control and achieving that perfect open crumb. The Dutch oven method eliminates guesswork, making restaurant-quality sourdough achievable at home. Ready to bake the real deal?
Ingredients for authentic san francisco sourdough bread
The foundation of authentic San Francisco sourdough lies in these eight precise ingredients.
| Ingredient | Amount | Notes |
|---|---|---|
| Active Sourdough Starter 🍞 | ½ cup | 100% hydration, bubbly and active |
| Unbleached All-Purpose Flour 🌾 | 3 ½ cups | King Arthur preferred for texture |
| Bread Flour 🌾 | 1 ½ cups | Higher protein for structure |
| Filtered Water 💧 | 2 ¼ cups | Room temperature, 70°F |
| Kosher Salt 🧂 | 1 ½ tsp | Diamond Crystal preferred |
| Honey 🍯 | ½ tsp | Local raw preferred for flavor |
| Cornmeal 🌽 | ¼ cup | For dusting Dutch oven |
| Ice Water 🧊 | ¼ cup | For final dough adjustment |
The sourdough starter is non-negotiable—your active culture defines the loaf's character. King Arthur's unbleached flour and Bread Flour blend creates the ideal protein structure for that signature open crumb. For water, filtered is essential—chlorine interferes with fermentation. I source my starter from a well-maintained 100% hydration culture, fed daily with equal parts flour and water. The honey addition isn't traditional but enhances browning while maintaining tanginess. For flour, King Arthur's high-gluten content gives that perfect chew without overpowering the sourdough flavor.
No active starter? Baker's percentage adjustments can work with commercial yeast, but authenticity suffers. Substitute local raw honey with maple syrup if needed—just reduce to 0.25 tsp to prevent excessive browning. For flour, white whole wheat at 1:1 ratio adds subtle nuttiness. The cornmeal must be fine-ground—coarse varieties can tear the crust. Ice water is critical for final dough adjustment; never skip this step—it prevents overproofing. Prefer a lighter loaf? Reduce bread flour by 0.25 cup and add more all-purpose.
Starter should be at peak activity—bubbly with 50-75% rise in 4-6 hours at 75°F. Store flour in airtight containers away from heat sources for up to 6 months. The dough ferments best at 75-78°F—use a proofing box if your kitchen runs cooler. For long-term storage, freeze shaped loaves unbaked for up to 3 months; thaw overnight before baking. The Dutch oven's steam retention creates that signature crust—never skip the initial steam phase during baking.
Why You'll Love This Recipe
- No-Knead Magic: I’ll admit, I was skeptical about the no-knead method—until I tried this. Mixing the starter with just bread flour and water, then letting it rise overnight, means zero arm work. The dough practically proofs itself while I sleep.
- Tangy Crust, Airy Crumb: That crisp, caramelized crust with a chewy, open crumb? It’s all thanks to the high-hydration starter and kosher salt. One bite, and you’ll forget store-bought ever existed—especially when you toast it the next morning.
- Weeknight Wonder: Between us, this is my secret weapon for lazy dinners. Tear it for sandwiches, use it to soak up marinara, or freeze slices for toast later. The starter does the heavy lifting, so I don’t have to.
- Budget Bread, Forever: A single starter batch stretches for weeks of loaves, and the flour mix costs pennies per serving. Honestly? I bake two loaves at once—one for the fridge, one for the freezer—so I’m never scrambling for bread again.
Step-by-step instructions for authentic San Francisco sourdough bread
Master this classic technique for that signature open crumb and crispy crust.
Combine Starter and Flours for Autolyse
In a large mixing bowl, combine the 0.5 cup active sourdough starter with the 3.5 cups unbleached all-purpose flour and 1.5 cups bread flour. Using your hands or a dough whisk, gently mix until no dry spots remain—this creates a shaggy dough. The purpose of this initial mix is to hydrate the flours before adding liquid, which helps develop gluten structure.
Add the 2.25 cups filtered water and 0.5 tsp honey to the bowl. Mix again until fully incorporated, then cover with a damp towel. Let this autolyse for 30-45 minutes. During this time, the dough will relax and become more pliable, making it easier to handle later. You'll notice the dough becomes smoother and slightly sticky as the flour absorbs the liquid.
Add Salt and Develop Gluten Through Stretch-and-Folds
After the autolyse, sprinkle the 1.5 tsp kosher salt evenly over the dough. Using a dough scraper, gently fold the salt into the dough from the edges toward the center. This prevents salt from concentrating in one area, which could inhibit gluten development.
Now perform a series of stretch-and-folds every 30 minutes for 2 hours total. To do this, wet your hands and grab one edge of the dough, stretch it upward, then fold it over itself. Rotate the bowl and repeat this process on all four sides. You're building gluten strands that will give your bread its characteristic open crumb structure. After each set, cover the bowl and let it rest until the next interval. The dough should become smoother and more elastic with each fold.
Bulk Fermentation with Controlled Temperature
After the final stretch-and-fold, let the dough rest for 5 minutes to relax. Then transfer it to a lightly oiled bowl, cover with plastic wrap, and place in a warm environment (75-78°F) for 4-5 hours. This bulk fermentation allows the dough to rise and develop flavor. You'll know it's ready when it has roughly doubled in size and shows good activity with bubbles forming throughout.
I recommend using a proofing box or placing the bowl in an oven with a bowl of hot water for consistent temperature control. During this time, perform two more sets of stretch-and-folds at the 1.5-hour and 3-hour marks to strengthen the gluten further. The dough should feel slightly tacky but not overly sticky—this indicates proper hydration and gluten development.
Shape and Final Proof in the Dutch Oven
Lightly dust a clean work surface with 0.25 cup cornmeal. Turn out the dough and gently shape it into a round boule by pulling the edges toward the center while rotating the dough. The goal is to create surface tension that will help maintain the shape during baking. Place the shaped boule seam-side up on a parchment-lined baking sheet.
Cover the dough loosely with plastic wrap and let it proof at room temperature for 1-2 hours, or until it has risen about 50% and springs back slowly when gently pressed. Preheat your Dutch oven with its lid on in the oven at 450°F for at least 30 minutes before baking. The hot Dutch oven creates steam that's essential for that signature open crumb structure and crispy crust.
Bake for Maximum Crisp and Open Crumb
Carefully transfer the dough to the hot Dutch oven using the parchment paper. Immediately pour 0.25 cup ice water into the bottom of the oven to create steam. Cover with the lid and bake for 20 minutes. This initial steam phase develops the open crumb.
After 20 minutes, remove the lid and continue baking for another 20-25 minutes until the bread reaches an internal temperature of 205-210°F and develops a deep golden brown crust. The bread is done when it sounds hollow when tapped on the bottom. Let it cool on a wire rack for at least 1 hour before slicing—this allows the crumb to set properly and prevents a gummy texture.
Pro Tips For Making Authentic San Francisco Sourdough Bread
- Use a Dutch Oven with Lid: I learned this the hard way—skipping the lid means your crust won’t get that signature crack and oven spring. Even if your Dutch oven isn’t perfect, a tight-fitting lid (or foil sealed tightly) traps steam and mimics a real bakery oven.
- Mix Flours by Weight, Not Volume: That extra cup of flour you scoop from the bag? It’s packed differently every time. Weigh your bread flour and all-purpose flour separately—this recipe needs precision. A cheap kitchen scale (under $15) makes all the difference.
- Skip Overproofing—Even If It Looks Ready: Your dough might beg for more time, but overproofed San Francisco sourdough flattens like a pancake. Test readiness by doing the poke test firmly—if the dough springs back slowly (30-60 seconds), it’s done. No guessing.
- Autolyse First—Wait 30 Minutes: This isn’t optional. Mixing your flours and water alone (no salt or starter yet) for 30 minutes develops gluten before you add the starter. Sounds weird, but it works—your final dough will be smoother and easier to shape. (Yes, even if you’re impatient like me.)
Storing and reheating this dish
Room-Temp Storage
Your freshly baked sourdough keeps best at room temperature for 2-3 days when wrapped in a clean kitchen towel or beeswax wrap. Store it in a paper bag to prevent drying—this mimics the bakery environment.
I place my loaves in a wooden bread box to maintain humidity levels naturally. The crust stays crisp while the interior remains tender for up to 4 days if your kitchen stays between 65-70°F. 🌾
Refrigerator Preservation
For longer storage, refrigerate your sourdough in an airtight container with a slice of apple or lemon to prevent drying. It stays fresh for 5-7 days, though the crust loses crispness.
To revive, wrap the cooled loaf in a damp towel and warm in a 200°F oven for 5-10 minutes. I avoid plastic bags—they trap moisture and make the bread gummy. For maximum freshness, freeze instead.
Freezer Storage Tips
Freeze your sourdough unwrapped on a baking sheet for 2 hours to create an ice barrier, then wrap tightly in plastic wrap followed by foil. It stays fresh for 3 months without quality loss. For individual slices, freeze them separately on a tray before bagging.
Thaw at room temperature for 1-2 hours, then warm in a 350°F oven for 5-8 minutes to restore texture. The crust crisps perfectly when reheated this way. ❄️
Reheating Perfection
For crusty texture, reheat slices in a skillet over medium heat for 1-2 minutes until golden brown. A toaster oven at 350°F works too—just 3-4 minutes per side. For whole loaves, wrap in aluminum foil and warm at 300°F for 15 minutes.
Avoid microwaving—it turns sourdough rubbery. My secret? A quick spray of water before reheating creates steam that revives the crust beautifully.
Reviving Day-Old Bread
If your sourdough feels stale, don't toss it! Slice and toast in a cast-iron skillet with butter for French toast. Or crumble into breadcrumbs by pulsing in a food processor. For sandwiches, lightly brush slices with olive oil and warm in a toaster—the oil restores moisture without sogginess.
I also love making croutons by cubing stale bread, tossing with olive oil and herbs, then baking at 375°F for 10 minutes. Waste not, want not! 💡
Nutrition facts
Frequently asked questions
Why does San Francisco sourdough have such a distinct open crumb?
The signature open crumb comes from a combination of factors: a 70% hydration ratio, proper gluten development through stretch-and-folds, and the Dutch oven's steam during baking. The high hydration creates large gas pockets, while the steam prevents the crust from setting too quickly, allowing those pockets to expand beautifully.
Can I make this recipe without a Dutch oven?
Yes, but you'll lose that signature crispy crust. Use a baking stone with a steam pan on the lower rack instead. Pour 1 cup boiling water into the pan when loading the oven to create steam. The crumb will still be open, but the crust may be slightly less crisp. For best results, try a commercial baking steel if available.
How do I know when my starter is ready for this recipe?
Your starter should be at peak activity: bubbly with 50-75% rise in 4-6 hours at 75°F. It should float in water when dropped in (the "float test"). If it's sluggish, feed it 1:1:1 ratio (flour:water:starter) 2-3 hours before using. Never use a starter that smells sour or has a grayish tint.
What's the best way to control the tanginess in SF sourdough?
Tanginess comes from fermentation time. For milder flavor, reduce bulk fermentation to 3-4 hours instead of 4-5. Use a younger starter (under 12 hours old) and avoid overproofing. The honey in this recipe also helps balance acidity. If your bread tastes too sour, next time try reducing fermentation by 30 minutes and check dough temperature (75-78°F is ideal).
Can I substitute bread flour with all-purpose flour?
You can, but expect a denser crumb. Replace 1.5 cups bread flour with 1.75 cups all-purpose flour and add 0.25 tsp vital wheat gluten to compensate for the lower protein content. The gluten development from extra stretch-and-folds will help, but the open crumb may be slightly less pronounced. For best results, stick with the original flour blend.