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Sourdough Loaf The Perfect Formula

Sourdough Loaf (The Perfect Formula)

1280kcal
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Prep 30 minutes
Cook 35 minutes
Rise & Rest Time 19 hours 15 minutes
Total 20 hours 20 minutes
An exceptional artisan sourdough recipe with a beautifully optimized 74% hydration level. Designed to move away from the stress of overly wet, unmanageable doughs, this formula yields an evenly structured, gorgeous interior crumb without massive caves or holes. It utilizes a professional bassinage step to tighten gluten and relies on structured ambient folds to build a proud, high-rising oven spring.
Cuisine American

Ingredients

Sourdough Starter Levain (Morning Before)
  • 5 g Sourdough starter culture
  • 35 g Water
  • 30 g All purpose flour or bread flour
  • 5 g Rye flour
The Main Dough (Late Afternoon)
  • 270 g Bread flour (90%)
  • 30 g Stone ground whole wheat flour (10%)
  • 207 g Water (69%)
  • 15 g Cold water (5% - Reserved strictly for the bassinage step)
  • 60 g Prepared levain (20% - From the morning build)
  • 6 g Salt (2%)

Equipment

  • Stand Mixer (Fitted with the dough hook attachment, or can be mixed by hand)
  • Cast Iron Dutch Oven (With a tightly fitting lid to trap steam)
  • Proofing Basket (Banneton, or a loaf pan lined with a clean kitchen towel)
  • Sharp Bread Lame or razor blade
  • Kitchen Scale
  • Parchment Paper

Method

Morning Starter Build & Afternoon Autolyse
  1. 7:00 AM: In a small glass jar, whisk your 5g of starter culture into 35g of water. Add the 30g of all-purpose or bread flour and 5g of rye flour, stirring thoroughly with a small spatula until no dry clumps remain. Cover loosely and let it ferment at a room temperature of 74–78°F (23–26°C) for 8 to 10 hours overnight until it at least triples in volume and peaks.
  2. 5:00 PM: In your stand mixer bowl (or a large mixing bowl), combine the 207g of water, 270g of bread flour, and 30g of stone-ground whole wheat flour. Mix cleanly by hand just until a shaggy mass forms. Cover and let it rest undisturbed for 1 hour for the autolyse phase to initialize natural gluten alignment.
Bassinage and Warm Primary Bulk Fermentation
  1. 6:00 PM: Add 60g of your mature peaked sourdough starter levain directly to the autolyzed dough mass.
  2. Mix on the low speed of your mixing machine for 2 to 3 minutes, or if using a KitchenAid mixer, run it on speed 3 for 3 to 4 minutes until well incorporated. Cover and let the dough rest for 30 minutes.
  3. 6:30 PM: Add the 6g of salt along with the 15g of reserved cold water directly to the dough.
  4. The process of adding extra water at this stage is called bassinage; it helps to tighten up the gluten networks. Mix on low speed for 2 to 3 minutes, or with a KitchenAid on speed 3 for 5 to 6 minutes until well incorporated. The dough should come together completely but remain slightly sticky on the bottom of the bowl. Cover and leave to rest for 30 minutes at 74–78°F (23–26°C).
  5. Systematically build internal strength and structure during this warm fermentation period by performing four separate wet-handed stretch-and-folds spaced over the evening:
  6. * 7:00 PM: 1st Stretch-and-fold.
  7. * 7:45 PM: 2nd Stretch-and-fold.
  8. * 8:30 PM: 3rd Stretch-and-fold.
  9. * 9:15 PM: 4th Stretch-and-fold.
  10. After your final stretch, let the dough proof for 30 minutes at 76–80°F (23–26°C). Monitor the dough surface: you should see some small bubbles forming, and the dough mass must become noticeably lighter. We are looking for a clean 40% to 50% rise before moving forward.
Preshaping, Taut Shaping, and Cold Retard
  1. 9:45 PM: Transfer the dough out onto a clean work surface and dust its top lightly with flour. Use a bench scraper to flip the dough over so the floured side faces directly down.
  2. Fold the dough cleanly onto itself so that the dry, floured surface remains entirely on the outside of the loaf (this becomes your signature crunchy crust). Shape into a neat round boule and let it rest on your workspace for 30 minutes completely uncovered.
  3. 10:15 PM: Dust the top of the relaxed dough with whole wheat flour. Use your dough scraper to flip it over onto the workspace so the floured side is down again.
  4. Starting at the side closest to you, pull the right two corners of the dough to the left, then fold them up into the upper half of the dough mass. Repeat this folding action cleanly on the left side as well.
  5. Finally, roll the dough smoothly from top to bottom, shaping it into a tight, smooth, and taut roll.
  6. Transfer the shaped roll seam-side up into a prepared proofing basket (or a loaf pan lined with a floured kitchen towel). Cover it securely with plastic wrap and return the dough to an 80°F (27°C) warm environment for 15 minutes.
  7. Transfer the covered basket into your refrigerator (ideal temperature 3–4°C / 40°F) to undergo a slow, cold fermentation for 14 to 24 hours.
High-Heat Covered Baking
  1. Next Morning: Place your cast iron pan with its lid inside the oven and preheat completely to 500°F (260°C) for 45 minutes to a full hour.
  2. Remove the cold dough directly from the refrigerator. Gently invert the basket to flip the dough out onto a sheet of parchment paper. Use a sharp razor or scoring lame to cut a clean, definitive slash across the top.
  3. Use the parchment corners to lift and transfer the loaf directly onto the hot cast iron pan. Secure the lid tightly to capture the expanding steam and bake at 500°F (260°C) for exactly 15 minutes.
  4. Carefully remove the lid, lower the oven temperature down to 450°F (230°C), and continue baking uncovered for an additional 20 minutes until the crust turns an even, deep golden brown. Let the loaf cool completely on a wire rack for 2 hours before slicing.

Nutrition

Calories1280kcalCarbohydrates256gProtein45gFat6gSaturated Fat1gPolyunsaturated Fat3gMonounsaturated Fat1gCholesterol9mgSodium442mgPotassium517mgFiber12gSugar1gVitamin A17IUVitamin C0.2mgCalcium74mgIron5mg

Notes

  • Chasing Hydration vs. Crumb Uniformity: A common pitfall for developing home bakers is believing that higher hydration (80–87%) automatically equates to better bread. Excessively wet dough is highly volatile and difficult to shape, often leading to massive uneven caves or flat, collapsed loaves. This 74% formula strikes the perfect sweet spot: it delivers an airy, incredibly tender interior crumb while remaining stable and easy to handle on the counter.
  • The Logic Behind High Feeding Ratios (1:7:7): This morning build uses a high ratio of fresh flour and water to starter (5g starter to 35g water and 35g combined flour). If you feed a strong, active starter culture at a low 1:1:1 or 1:2:2 ratio for a 12-hour period, it will consume its food, peak early in 6 hours, and collapse into an acidic state before you mix your dough. A 1:7:7 ratio ensures a slow, steady fermentation that hits its perfect bubbly peak exactly when you are ready to bake.
  • Tracking the 40% Volume Expansion Rise: When managing the warm bulk rise phase, success is dictated by tracking the physical expansion of your dough rather than watching the clock. If your kitchen runs cool and your dough hasn't reached a clear 40% to 50% rise with visible surface bubbles by 9:15 PM, do not shape it yet. Add a 5th stretch-and-fold sequence to extend the warm fermentation window until it achieves the proper lightness.
  • Preventing Over-Proofing During the Cold Retard: To ensure your bread doesn't over-proof and collapse during its 14 to 24-hour stay in the refrigerator, your appliance must maintain a steady temperature between 3–4°C (37–40°F). Cold temperatures halt yeast gas production while allowing lactic acid bacteria to continue building flavor. If you miscalculate the warm bulk fermentation and shape the loaf past a 50% rise, it will continue expanding in the fridge and over-proof.

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