Authentic San Francisco Sourdough Bread Recipe: Golden Crust With Tangy Depth

This authentic San Francisco sourdough bread recipe delivers the signature tangy flavor and crispy crust that made Tartine Bakery famous. The secret lies in a well-maintained starter, precise fermentation times, and baking at 475°F with steam—just like the pros.

I’ve perfected this method after years of baking, ensuring every loaf has that signature open crumb and golden crust.

What sets this recipe apart is the balance between tradition and accessibility. While we follow the classic 24-hour bulk fermentation and 2-hour proof, I’ve included troubleshooting tips for common issues like dense crumb or weak structure.

The dough is shaped into a classic batard, scored deeply, and baked in a Dutch oven to trap steam—critical for that iconic crust.

By the time your loaf emerges from the oven, you’ll have a golden, crackling crust with a tangy aroma that fills your kitchen. The crumb should be open and airy, with just the right chew.

This isn’t just bread—it’s a labor of love that rivals the best bakeries in the city.

Whether you’re a seasoned baker or trying sourdough for the first time, this recipe breaks down each step clearly. The key is patience—letting the dough do the work during fermentation. Ready to bake like a San Franciscan? Let’s get started.

Ingredients for authentic san francisco sourdough bread

The essential ingredients for that iconic San Francisco sourdough: a lively starter, premium flours, and precise hydration.

Your sourdough starter is the heart of this recipe—it should be bubbly, active, and at 100% hydration. If yours is sluggish, feed it 1:1:1 (starter:flour:water) twice daily for 24 hours. For flours, King Arthur all-purpose and bread flour give the perfect balance of structure and chew. I always grab mine from Whole Foods or Local Mill if available—they’re fresher. The sugar and salt should be Diamond Crystal kosher; it dissolves better than table salt and enhances flavor without overpowering. Water matters too—use filtered or let tap water sit out overnight to off-gas chlorine.

No bread flour? Add 1 tbsp vital wheat gluten per cup of all-purpose flour to mimic the protein structure. Short on time? Use 100% all-purpose flour, but expect a slightly denser crumb. The butter is non-negotiable for lamination—cold, cubed butter creates those signature air pockets. If you’re gluten-sensitive, substitute xanthan gum (1/2 tsp) to bind the dough. For scoring, a lame or razor blade works best—don’t use a dull knife. The cornmeal isn’t just for dusting; it adds a subtle sweetness to the crust when baked.

Store your starter in the fridge between bakes—it’ll last 1 week if fed weekly. Flours keep indefinitely in a cool, dark pantry, but butter should go in the freezer once opened. For the dough, cover tightly with plastic wrap and refrigerate between fermentation stages to slow activity. The final loaf reheats beautifully—5 minutes at 350°F in a towel-wrapped bag revives that bakery-fresh crust. Freeze extras for up to 3 months by wrapping tightly in foil.

Step-by-step instructions for authentic San Francisco sourdough bread

Here's how to craft that iconic San Francisco sourdough with a crackly crust and open crumb.

In a large mixing bowl, combine the 0.5 cup Active Sourdough Starter, 3.5 cups All-Purpose Flour, 1.5 cups Bread Flour, 0.5 cup Unbleached White Bread Flour, 0.25 cup Granulated Sugar, and 1.5 tsp Salt. Create a well in the center and gradually add 1.75 cups Water, mixing just until combined. The dough should be shaggy but not sticky at this stage.

I like to use a dough whisk for this initial mix—it helps incorporate the flour evenly without overdeveloping the gluten too early. Let the dough rest for 10 minutes while you prepare your workspace. This brief rest allows the flour to hydrate and the gluten to begin relaxing, making the next steps easier.

After resting, turn the dough out onto a lightly floured surface and knead gently for 5-7 minutes until smooth and elastic. You're aiming for a dough that's slightly tacky but not sticky—this indicates proper hydration. If it feels too dry, add 1 teaspoon of ice water at a time until just right.

Divide the dough into 4 equal pieces (about 8 ounces each) and roll each piece into a 12-inch log, about 2 inches wide. Place each log on a parchment-lined baking sheet and refrigerate for 30 minutes to firm up.

While the dough chills, prepare the butter layer. Take the 0.25 cup Unsalted Butter and roll it between two sheets of parchment paper into a 12-inch log about ½-inch thick. Once the dough logs are firm, carefully peel back the parchment and place the butter log along the center of each dough log. Fold the dough over the butter, sealing tightly to create a butter-filled pocket. This lamination is what gives San Francisco sourdough its signature rich, buttery flavor.

Return the butter-wrapped dough to the refrigerator for another 30 minutes. This cold rest prevents the butter from melting and ensures even distribution when baked. The dough should feel firm but still pliable—if it's too soft, return it to the fridge for 10-15 more minutes.

Preheat your oven to 375°F and place a baking stone or inverted baking sheet inside to heat. Line a half-sheet pan with parchment paper and dust generously with 0.25 cup Cornmeal—this prevents sticking and adds to the bread's rustic appearance.

Remove one dough log from the refrigerator and gently shape it into a loaf pan or free-form boule. For a classic San Francisco look, I prefer the free-form boule. Dust your hands with cornmeal and gently press the dough into a round shape, creating tension on the surface. Place the shaped dough, seam-side up, onto the prepared pan. Cover loosely with plastic wrap and let it proof at room temperature for 1-1.5 hours, or until it has nearly doubled in size and looks puffy and dome-shaped.

Here's the thing—this proofing stage is where the magic happens. The dough should spring back slowly when poked with a finger, not immediately. If it's rising too quickly, return it to the refrigerator for 30 minutes to slow the fermentation. The goal is a slow, controlled rise that develops deep flavor and proper structure.

Preheat your oven to 475°F with the baking stone or sheet inside. About 20 minutes before baking, place a cast-iron skillet or metal bowl in the lower oven rack to heat. This will create steam during baking, which is essential for that signature crackly crust.

Remove the proofed dough and score the top with a sharp razor blade or bread lame, making a ½-inch deep cross or simple diagonal slash. This allows the dough to expand properly and creates that beautiful, crispy ear. Transfer the scored dough to the hot baking stone or sheet and immediately pour 1 cup of boiling water into the hot skillet below. Quickly close the oven door to trap the steam.

Bake for 20-25 minutes until the crust is deep golden brown and the internal temperature reaches 205-210°F. The bread should sound hollow when tapped on the bottom. If the crust isn't browning quickly enough, tent the bread with foil for the last 5-10 minutes to prevent over-browning while it finishes baking.

Remove the bread from the oven and transfer it to a wire rack to cool completely. I know it's tempting to slice into that warm, crackly crust immediately, but resist! Let the bread cool for at least 1 hour before slicing. This resting period allows the gluten to fully relax and the crumb to set, ensuring clean slices every time.

For the ultimate San Francisco sourdough experience, serve slices warm with cold butter or olive oil. The contrast of temperatures enhances the bread's flavors—crispy crust, open crumb, and that signature tangy depth. Store any leftovers in a bread box or wrapped in a clean kitchen towel to maintain freshness for up to 3 days. For longer storage, freeze slices wrapped in plastic wrap for up to 3 months.

Common mistakes when making this recipe

Underfermented Dough

If your dough rises too quickly or lacks that signature tang, you’ve likely underfermented it. San Francisco sourdough needs 24 hours of bulk fermentation at room temperature (68-72°F) for proper flavor development. I’ve seen beginners rush this step, resulting in a bland loaf.

Use a digital thermometer to monitor your kitchen temp—if it’s below 70°F, extend fermentation to 30-36 hours for optimal acidity. 💡

Pro tip: The dough should smell sour, sweet, and slightly boozy when ready. If it smells flat or like raw flour, it needs more time. For a quick test, poke the dough—if it springs back slowly (not immediately), it’s ready for shaping.

Overproofed or Collapsed Loaf

An overproofed dough collapses dramatically during baking, losing its structure. This happens when you skip the cold proof in the fridge (12-16 hours) before final shaping. Cold proofing slows yeast activity, giving you control.

If your dough overproofs, reshape it gently and refrigerate for 1-2 hours to firm it up before baking. 🥖

Watch for these signs: If the dough feels mushy or leaves deep fingerprints when poked, it’s overproofed. For a quick fix, shape it into a boule, cover tightly, and refrigerate for 30 minutes to reset the structure.

Dense or Gummy Crumb

A dense, gummy crumb usually means over-kneading or insufficient gluten development. San Francisco sourdough should have an open, airy crumb with visible holes. If yours turns out dense, you likely kneaded too aggressively or didn’t rest the dough between folds.

I recommend using a dough scraper and gentle stretches-and-folds during bulk fermentation instead of vigorous kneading. 🌾

Another culprit? Too much hydration. Stick to the 70-75% hydration ratio (1.75 cups water for 3.5 cups flour + 1.5 cups bread flour). If your dough feels too sticky, add 1 tbsp bread flour at a time until it’s manageable but still slightly tacky.

Pale or Soft Crust

A pale, soft crust means your bread lacked steam during baking. San Francisco sourdough needs high heat (475°F) and steam to develop that iconic crackly crust. Skip the steam trick? Your loaf will bake evenly but miss that signature snap.

Place a cast-iron skillet on the oven floor and add 1 cup boiling water when loading the dough—this creates the perfect steam environment. 🔥

If your crust still turns out pale, try baking at 500°F for the first 10 minutes, then reduce to 475°F. For extra color, brush the baked loaf with cold butter or olive oil after removing it from the oven.

Uneven Baking or Burnt Spots

Uneven baking often stems from poor oven heat distribution. San Francisco sourdough requires a hot, even oven. Place your baking stone or sheet on the middle rack and preheat for at least 1 hour before baking.

If your oven runs hot, tent the bread with foil for the last 10 minutes to prevent burning. 🌡️

For stubborn hot spots, rotate your bread halfway through baking (after 10 minutes). If you’re using a Dutch oven, avoid opening the lid during the first 20 minutes—this disrupts steam and can cause uneven browning.

Frequently asked questions