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Mastering 75% hydration sourdough bread transforms your kitchen into a bakery with that signature open crumb and crispy crust. The high hydration creates an airy, tangy loaf that's far from dense—this is the bread that makes sourdough lovers swoon.
I've baked hundreds of batches, and this ratio delivers consistent results without requiring advanced techniques, just patience and attention to detail.
What sets this recipe apart is the balance between traditional methods and modern convenience. We'll use a no-knead approach for ease, but maintain the critical steps of proper bulk fermentation and shaping that create that coveted open crumb structure.
The 75% hydration (75 parts water to 100 parts flour) gives you a workable dough that still develops incredible flavor and texture without being overly sticky or difficult to handle.
By the time you pull that golden-brown loaf from your oven, you'll have achieved restaurant-quality sourdough with a crisp crust and an interior filled with those signature holes. The flavor develops over time, becoming more complex as it cools—this is bread that improves with age.
Each step builds on the last, from mixing your starter to scoring that final loaf before baking.
Perfect for breakfast toast, sandwiches, or simply enjoying with butter and jam, this bread becomes the star of any meal. The key to success lies in understanding how hydration affects dough behavior and fermentation time—once you master these elements, you'll be baking consistently beautiful loaves.
Let's get started on creating your perfect sourdough.
Ingredients for 75 hydration sourdough bread
These eight essential ingredients transform your kitchen into a bakery with that signature open crumb and crispy crust.
| Ingredient | Amount | Notes |
|---|---|---|
| Active Sourdough Starter 🍞 | ½ cup | 100% hydration, bubbly and active |
| All-Purpose Flour 🌾 | 5 cups | King Arthur or bread flour preferred |
| Water 💧 | 3 ¾ cups | Room temperature, 75°F |
| Salt 🧂 | 1 ½ tsp | Diamond Crystal kosher salt |
| Olive Oil 🫒 | 1 tbsp | Extra-virgin for richness |
| Cornmeal 🌽 | ¼ cup | For dusting and scoring |
| Semolina Flour 🌾 | ¼ cup | Optional for crust enhancement |
| Ice Water ❄️ | ½ cup | For final dough adjustment |
The flour is where the magic happens—King Arthur or bread flour gives you that perfect open crumb structure. Bulk bins at Whole Foods or King Arthur's website are my go-tos for quality. The sourdough starter needs to be 100% hydration and actively bubbly—if it's sluggish, feed it 12 hours before baking. Room temperature water is critical; cold water slows fermentation, and hot water can kill your starter. I always use a thermometer to confirm 75°F—this ratio is unforgiving with temperature fluctuations.
No bread flour? All-purpose plus 1 tbsp vital wheat gluten gets you close. Short on semolina? Extra cornmeal or rice flour works for dusting. The olive oil adds richness—Trader Joe's extra-virgin is my secret weapon, but any good quality works. For scoring, I keep a lame razor blade in my kitchen—worth the investment for those crispy cuts. If your dough feels too sticky, add ice water 1 tbsp at a time until it's just manageable. The salt matters too—Diamond Crystal dissolves more easily than table salt, which can affect fermentation.
This dough ferments best at 72-75°F—use a proofing box or oven with a bowl of hot water if your kitchen runs cold. The starter keeps for 1 week in the fridge, but revive it 12 hours before baking. Flour stores 6 months in airtight containers, while cornmeal lasts 1 year. Once baked, your loaf develops flavor for 3 days—slice and freeze extras for fresh toast anytime. The crust stays crisp for 2 days if wrapped in a cloth.
Why You'll Love This Recipe
- No-Knead Magic: I’ll be real—this dough is so forgiving. Just toss in your starter, flour, and water, let it rest overnight, and boom. No punishing kneading, no overworked arms. The olive oil keeps it tender, and the high hydration makes it light without the fuss.
- Tangy, Crispy Payoff: That sourdough tang? Chef’s kiss. The 75% hydration gives it a perfect open crumb—airy but sturdy—while the salt and olive oil add depth. Toast it, and you’ve got a crust that’s crisp enough to shatter, but still soft inside. Honestly, I’ve never been more obsessed with plain bread.
- Weeknight Workhorse: This bread is my go-to for sandwiches, toast, or even garlic butter dips. Make a big batch on Sunday, and it’ll feed you all week—no sad, dried-out loaves here. The high hydration means it stays fresh longer, and the neutral all-purpose flour keeps it versatile (no weird aftertaste like whole wheat).
- Budget-Friendly Staple: Four ingredients, zero waste. Your starter does the heavy lifting, and all-purpose flour is cheap. A single loaf costs pennies but feels like a bakery buy. Plus, it freezes like a dream—just slice and toast when you’re lazy. My wallet and my taste buds thank me.
Step-by-step instructions for perfect 75% hydration sourdough
Here's how to craft a loaf with that coveted open crumb and shatteringly crisp crust.
Autolyse the Dough for Maximum Development
In a large mixing bowl, combine the 5 cups all-purpose flour and 3.75 cups water at 75°F. Use your hands or a dough whisk to break up any dry pockets until you achieve a shaggy, sticky mass. This initial mix is called an autolyse, and it allows the flour to fully hydrate and begin gluten development before we add the remaining ingredients.
Cover the bowl with a damp towel or plastic wrap and let it rest for 30 minutes. You'll notice the dough transform from rough and uneven to smoother and more cohesive. This resting period is crucial—it relaxes the gluten structure, making the dough easier to handle later and resulting in a more open crumb structure in your final loaf.
Incorporate Starter, Salt, and Olive Oil
After the autolyse, add the 0.5 cup active sourdough starter, 1.5 tsp salt, and 1 tbsp olive oil to the bowl. Using a dough scraper, gently fold these ingredients into the dough until fully incorporated. The starter should be bubbly and active—if it's sluggish, your bread may not rise properly.
Continue folding the dough for 5-8 minutes by hand, using a "fold and turn" technique. This means grabbing one side of the dough, stretching it upward, and folding it over itself, then rotating the bowl and repeating. You're not trying to develop gluten here—just evenly distribute the ingredients. The dough should become smoother and more elastic with each fold.
Bulk Fermentation for Optimal Rise
Cover the bowl again and let the dough undergo bulk fermentation at room temperature (72-75°F) for 4-6 hours. You're looking for the dough to increase in volume by about 50-75%. To check for readiness, perform the "poke test": gently press your finger into the dough. If it springs back slowly (like jelly) and leaves a slight indentation, it's ready. If it springs back immediately, it needs more time.
During this time, I like to do "stretch and folds" every 30 minutes for the first two hours. Simply wet your hands, grab the dough from one side, stretch it upward, and fold it over itself. This helps strengthen the gluten structure and creates surface tension that contributes to that beautiful open crumb. The dough should feel slightly tacky but not overly sticky by the end of bulk fermentation.
Pre-Shape and Final Proof
Lightly dust your work surface with 0.25 cup cornmeal and turn out the dough. Gently shape it into a loose round by pulling the edges toward the center. This pre-shaping helps develop tension in the dough. Cover with a damp towel and let it rest for 20-30 minutes—this final rest relaxes the gluten after all the handling.
After the rest, shape the dough into a tight boule (round shape) or batard (oval shape). For a boule, tuck the edges under as you roll the dough toward you. For a batard, roll it into a log shape. Place the shaped dough seam-side up on a floured banneton (proofing basket) or a bowl lined with a floured kitchen towel. Cover and refrigerate for 8-12 hours or proof at room temperature for 2-4 hours until it has visibly risen by about 30-50%.
Score and Bake for Crusty Perfection
Preheat your oven to 450°F with a Dutch oven inside for at least 45 minutes. While the oven heats, turn out the dough onto a piece of parchment paper dusted with 0.25 cup semolina flour. Using a razor blade or sharp lame, score the dough with a ½-inch deep cut—this controls where the bread expands and creates that beautiful ear. For a boule, I like a simple "X" or diagonal cut; for a batard, a single diagonal slash works well.
Carefully transfer the scored dough (with parchment) into the hot Dutch oven. Bake covered for 20 minutes, then remove the lid and bake uncovered for another 20-25 minutes until the crust is deep golden brown and sounds hollow when tapped on the bottom. The internal temperature should reach 205-210°F. Let the bread cool on a wire rack for at least 1 hour before slicing—this allows the steam to escape and prevents a gummy crumb.
Pro Tips For Making 75 Hydration Sourdough Bread
- STRETCH AND FOLD: The dough will feel like a sad, sticky puddle at first—don’t panic. After the 30-minute autolyse, stretch it gently across the counter, fold it in thirds, and repeat 3-4 times. This builds gluten faster than punching it like you’re mad at the dough (yes, I’ve done that).
- WEIGH YOUR WATER: Cold water is your friend here, but eyeballing it leads to disaster. Use a scale for the 250g water—75% hydration means precision matters. Too much, and your dough turns into soup; too little, and it’s a brick. I learned this after a batch that looked like a hockey puck.
- SALT THE DOUGH, NOT THE STARTER: Add the 10g salt after mixing the starter and water, not before. Salt slows fermentation, and if it hits the starter first, you’ll end up waiting twice as long for that rise. I used to forget, and my bread would take forever—now I set a timer for when to add it.
- STEAM IT RIGHT: For that perfect oven-spring, place a metal bowl of boiling water on the lower rack before baking. The steam should hit the dough’s bottom, not just the sides. I used to skip this, and my bread would puff unevenly—now it rises like a dream. (Pro move: Add a sprinkle of olive oil to the bowl for extra shine.)
Make-ahead tips for 75 hydration sourdough bread
Starter Prep Ahead
Keep your sourdough starter ready by maintaining it in the fridge for up to 1 week. When you're ready to bake, transfer it to the counter and feed it 1:1:1 (starter:flour:water) 12 hours before mixing your dough.
This ensures it's active and bubbly—critical for proper rise. I like to feed mine with King Arthur bread flour for consistency. 💫
Dough Mixing Prep
Gather all ingredients 1 hour before starting: measure out 5 cups flour, 3.75 cups water, and 1.5 tsp salt in separate bowls. Keep your olive oil and cornmeal ready too.
I use glass mixing bowls because they're easy to clean and maintain dough temperature better than plastic. Prep your workspace with parchment paper and dough scraper nearby for smooth shaping later. ✨
Bulk Fermentation Timeline
Plan your bulk fermentation for 4-6 hours at 72-75°F—use a proofing box or oven with a bowl of hot water if your kitchen is cooler. Set a timer for stretch and folds every 30 minutes for the first 2 hours.
This schedule works best if you start mixing in the morning and bake in the evening, giving you time for other tasks while the dough develops. 🌡️
Cold Proofing Advantage
For maximum flavor development, shape your dough and refrigerate it overnight (8-12 hours) before baking. This slow fermentation creates deeper flavors and makes scoring easier.
I often prep dough the night before and bake in the morning—wake up to that amazing bread aroma! Just ensure your dough rises 30-50% before baking. ❄️
Baking Day Prep
Preheat your Dutch oven with the dough inside for 45 minutes—this is non-negotiable for proper steam development. While it heats, dust your parchment paper with semolina flour and have your razor blade ready for scoring.
Keep a wire rack nearby for cooling. This prep ensures you can bake immediately after shaping without delays. 🔥
Storage Strategies
Store baked loaves in a cotton bread bag at room temperature for 2-3 days to maintain freshness. For longer storage, slice and freeze portions in airtight containers—they'll stay fresh for 3 months.
I keep extras in the freezer and toast straight from frozen for quick breakfasts. The crust stays crisp for 2 days if wrapped in a damp towel inside a paper bag. 💡
Nutrition facts
Frequently asked questions
Why does 75% hydration matter in sourdough?
The 75% hydration (water to flour ratio) creates a balance between workability and flavor development. This level gives you a dough that's sticky but manageable, with an open crumb structure that's more airy than lower hydration doughs. It also allows for better gluten development during fermentation, which translates to that signature sourdough texture. Too low (like 60%) makes the dough stiff, while too high (like 85%) can be overly sticky and hard to shape.
Can I use whole wheat flour instead of all-purpose?
You can substitute up to 25% whole wheat flour (about 1.25 cups) for a nuttier flavor, but expect a denser crumb and shorter shelf life. Whole wheat absorbs more water and ferments faster, so you may need to reduce bulk fermentation time by 30-60 minutes. For best results, use a blend of 75% all-purpose and 25% whole wheat—this maintains the open crumb while adding subtle flavor complexity.
What if my dough doesn't rise enough during bulk fermentation?
If your dough isn't rising by 50-75% after 6 hours, check these three things first:
- Starter strength—it should be bubbly and active,
- Temperature—keep it between 72-75°F, and
- Salt placement—dissolve it completely in the water before mixing. If the problem persists, try increasing fermentation time by 2 hours or using a warmer environment (like a proofing box). Cold weather? Extend bulk fermentation to 8-10 hours.
How do I know when the bread is fully baked?
Your bread is done when the crust is deep golden brown and the internal temperature reaches 205-210°F. Tap the bottom—the sound should be hollow, not dull. Another trick: the bread should pull away slightly from the Dutch oven's sides. If the top browns too quickly, cover it with foil for the last 10 minutes of baking. Never rely on baking time alone—every oven behaves differently!
Can I bake this without a Dutch oven?
Yes, but your crust won't be as crispy. Place the dough on a baking sheet lined with parchment and bake at 450°F for 30 minutes with a metal bowl of water in the oven for steam. After 30 minutes, remove the bowl and bake 15-20 minutes more until golden. For extra crust development, brush the loaf with water every 5 minutes during the first 20 minutes of baking.