100 Spelt Sourdough Bread Recipe: Nutty Crust and Airy Crumb Mastery

This 100% spelt sourdough bread recipe delivers a nutty, rustic loaf with an irresistibly crisp crust and open, airy crumb—no wheat flour in sight. 🌾 The secret lies in spelt’s natural sweetness and lower gluten content, which creates a tender yet structured loaf that’s both satisfying and digestible. Unlike traditional sourdough, this version relies on spelt’s unique protein structure for that signature chew without overworking the dough.

Mastering spelt sourdough requires patience: a 72-hour starter (or longer) to cultivate wild yeast and bacteria, followed by a slow fermentation (12–16 hours) that develops deep flavor. The dough’s lower gluten means less kneading—just stretch-and-folds—but the hydration stays high (around 75–80%) for that signature open crumb. Baking at 450°F with steam ensures a golden, crackly crust while keeping the interior moist and elastic.

What sets this apart is the nutty, slightly sweet flavor spelt brings, paired with a texture that’s lighter than whole wheat but heartier than white sourdough. The crust develops a caramelized depth from the spelt’s natural sugars, while the crumb stays tender for days. Perfect for sandwiches, toast, or simply enjoyed with butter—this loaf proves spelt sourdough isn’t just possible, it’s superior.

For customization, add seeds (sunflower, flax) or whole grains (rye, barley) to the dough for extra texture and nutrition. Store wrapped at room temperature for 3–4 days or freeze for up to 3 months—though you’ll likely devour it faster. Let’s bake this loaf that’s as nourishing as it is delicious.

Ingredients for 100 spelt sourdough bread

Ten pounds of spelt flour and patience—this is your nutty, rustic loaf foundation.

Spelt flour is the star here, so buy organic stone-ground if possible—it’s worth the splurge for that authentic nutty flavor. King Arthur or Bob’s Red Mill are my go-tos, but any quality brand works. The starter needs to be 100% hydration and bubbly—feed it daily with spelt flour and honey for 72 hours before using. For the water, tap is fine if you’re in a soft-water area, but filtered is best to avoid any off-flavors. The seeds are optional but add fantastic texture—Trader Joe’s has great bulk bins for both sunflower and flax.

No instant yeast? Skip it—this relies entirely on wild fermentation. Running short on cornmeal? Semolina works just as well for dusting. The olive oil can be swapped for avocado oil if you prefer, but stick with extra-virgin for that rich flavor. For the honey, maple syrup works 1:1 if you’re avoiding honey. The ice cubes might seem odd, but they’re key for shaping—freeze water in a tray ahead of time to save time. And if you’re baking for a crowd, double the recipe—just scale everything up proportionally.

Store your loaves wrapped in a clean kitchen towel at room temperature for 3–4 days—they’ll keep better than plastic. For longer storage, freeze wrapped in foil for up to 3 months. The crust stays crisp for about 24 hours after baking, so slice and freeze individual portions if you’re not using them all at once. Pro tip: Toast directly from frozen for the best texture—no thawing needed.

Step-by-step instructions for spelt sourdough bread mastery

Here’s how to transform your spelt flour into a loaf with a nutty crust and airy crumb—every time.

First, feed your 4 cups active sourdough starter by mixing in 7.5 cups filtered water and 0.5 cup honey or maple syrup. Stir well until fully combined, then let it sit at room temperature for 4-6 hours until it doubles in volume and becomes bubbly. You’re looking for a starter that’s light and airy—if it doesn’t rise, add the 1 tsp instant yeast now and let it sit another 2 hours. This ensures your dough has enough lift for that signature airy crumb.

Here’s the thing—spelt flour is heavier than wheat, so a strong starter is non-negotiable. If your starter smells tangy but flat, don’t worry; it’s still good. Just give it that extra boost with the yeast if needed. Once it’s active, proceed to the next step without draining it.

In a large mixing bowl, combine the 10 lbs spelt flour, 4 tsp kosher salt, 2 cups sunflower seeds, and 1 cup flaxseeds. Mix these dry ingredients together until the seeds are evenly distributed. Create a well in the center and add the fed starter, 7.5 cups filtered water, and 0.5 cup olive oil. Use a dough whisk or your hands to gradually incorporate the liquids into the dry ingredients.

Once everything comes together, turn it out onto a lightly floured surface and knead for 8-10 minutes until the dough is smooth and elastic. Spelt dough is stickier than wheat dough, so don’t be afraid to wet your hands slightly to prevent sticking. You’ll know it’s ready when it springs back slowly when poked—this ensures a good oven spring later.

Place the dough back into the bowl, cover it with a damp towel, and let it bulk ferment at room temperature for 4-6 hours. You’re aiming for the dough to rise by about 50% and develop small bubbles along the surface. This is where the magic happens—the gluten relaxes, and the flavor deepens. I like to do this in two stages: ferment for 2 hours, then do a set of stretch-and-folds every 30 minutes for the next 2 hours. This builds strength and ensures an even crumb.

Real talk: spelt dough ferments slower than wheat, so don’t rush it. If your kitchen is warm, reduce the time slightly, but never skip the stretch-and-folds. They’re what give you that professional, open crumb structure. Once it’s ready, it should jiggle slightly when the bowl moves—this is your signal to move to the next step.

Turn the dough out onto a lightly cornmeal-dusted surface and gently shape it into a round boule or batard. For a boule, tuck the edges under as you shape it, creating surface tension for that beautiful oven spring. Once shaped, place it seam-side up on a baking sheet dusted with 2 cups cornmeal. Cover it loosely with plastic wrap and refrigerate for 12-16 hours. This cold proofing is crucial—it allows the gluten to fully relax and the flavor to develop even more.

Here’s where it gets fun—take the dough out of the fridge and let it sit at room temperature for 1 hour before baking. This final rise gives you that perfect texture. If you’re baking immediately, you can skip the cold proof and do a shorter room-temperature proof of 2-3 hours, but the flavor will be less developed.

Preheat your oven to 425°F with a Dutch oven inside for 45 minutes. This ensures your oven is hot enough for that perfect crust. Carefully transfer the dough (still on the cornmeal-dusted baking sheet) into the Dutch oven, cover it, and bake for 30 minutes. After 30 minutes, remove the lid and bake for another 15-20 minutes until the crust is deep golden brown and the internal temperature reaches 205-210°F. You’ll know it’s done when the bread sounds hollow when tapped on the bottom.

Let the bread cool on a wire rack for at least 2 hours before slicing. This resting period is critical—it allows the steam to escape and the crumb to set. If you can’t wait, slice a small piece to check the texture. You’re aiming for a nutty crust with an open, airy crumb that’s just slightly dense—this is the hallmark of great spelt sourdough. Enjoy it warm with a smear of that olive oil you saved!

Essential equipment for 100 spelt sourdough bread

Dutch Oven Essentials

A Dutch oven is non-negotiable for this recipe—its heavy cast iron retains heat perfectly and creates that iconic steam environment for crust development. I recommend a Lodge 5-quart or Le Creuset 5.5-quart for even heat distribution. The lid should fit snugly to trap steam during the first 30 minutes of baking, which is critical for that crisp, crackly crust. If you don’t own one, borrow or invest—it’s worth every penny for spelt sourdough. 🔥

Digital Thermometer

Spelt dough’s lower gluten means it’s more sensitive to temperature fluctuations. A Thermoworks Smoke or Meater Plus digital thermometer ensures your oven hits 425°F accurately and monitors internal bread temperature (205-210°F). Place the probe in the center of the loaf during baking—this prevents over- or under-baking. I’ve ruined loaves by eyeballing temps, so trust the numbers. Pro tip: Calibrate your oven if readings vary by more than 10°F.

Dough Scraper

Spelt dough is sticky and dense, making it a nightmare to handle without the right tools. A stainless steel dough scraper (like OXO Good Grips) is your best friend for dividing, shaping, and cleaning up messes. Use it to gently lift dough from surfaces—no flour needed—while preventing tears. I keep one near my mixing bowl at all times during shaping. For extra grip, lightly wet the scraper’s edge to reduce sticking. 💪

Banneton or Proofing Basket

While you can shape this dough free-form, a banneton (proofing basket) elevates your game by creating tension for better oven spring. Look for a rattan or plastic-lined basket (I love La Cloche or Chicco) that holds 1.5–2 lbs of dough. Dust it with rice flour (not cornmeal) to prevent sticking—spelt dough clings like glue. If you skip the banneton, use a bowl lined with a floured towel as a substitute. The key is creating surface tension to help the loaf rise beautifully in the oven.

Instant-Read Thermometer

Beyond baking, an instant-read thermometer (like Thermapen MK4) helps verify your starter’s readiness (75–80°F) and dough temperature (78–82°F). Spelt dough ferments best in this range—too cold, and it sluggishes; too hot, and it overproofs. I check temps after mixing and before shaping to ensure consistency. For large batches, this tool saves time by preventing guesswork. Keep it handy—it’s a game-changer for troubleshooting. ✨

Cornmeal and Rice Flour

These aren’t just dusting agents—they’re texture enhancers. Use fine cornmeal (like Bob’s Red Mill) for the baking sheet to create a crisp base, and rice flour (or semolina) for the banneton to prevent sticking. The cornmeal adds a subtle sweetness that complements spelt’s nuttiness, while rice flour’s neutral taste keeps the focus on the bread. Store them in airtight containers to preserve freshness—stale cornmeal turns gummy and ruins the crust’s texture. 🌾

Frequently asked questions