This croissant sourdough loaf is a hybrid bake that brings together two iconic bread traditions. From sourdough, you get depth of flavor, chew, and natural fermentation. From croissants, you borrow lamination—thin layers of butter folded into dough—to create flakiness and tenderness rarely found in a standard loaf.
This bread is not fast. It rewards patience, planning, and a little bravery with butter. Expect a process that spans two days, with rest periods that do most of the work for you. The payoff is a show-stopping loaf that slices beautifully, toasts like a dream, and tastes luxurious even when eaten plain.
Ingredients
For the Dough
- 450 g bread flour (strong flour, 11.5–13% protein)
- 50 g all-purpose flour
- 350 g water (room temperature)
- 100 g active sourdough starter (100% hydration)
- 10 g fine sea salt
- 20 g sugar or honey (optional, but recommended for croissant vibes)
For Lamination
- 200 g high-quality unsalted butter, cold but pliable
Equipment
- Mixing bowl
- Dough scraper
- Rolling pin
- Parchment paper
- Bench knife
- Plastic wrap or reusable cover
- Dutch oven or lidded bread pot
- Baking stone or steel (optional but helpful)
Day 1: Dough Development and Lamination
1. Autolyse (45–60 minutes)
In a large bowl, combine the bread flour, all-purpose flour, and water. Mix until no dry flour remains. The dough will look shaggy and rough—perfect. Cover and let rest for 45–60 minutes.
Why this matters: Autolyse hydrates the flour and kick-starts gluten formation without kneading. This is especially important because lamination later requires extensibility without tearing.
2. Add Starter, Salt, and Sugar
After autolyse, add the sourdough starter, salt, and sugar (if using). Mix thoroughly by hand, squeezing and folding the dough until everything is evenly incorporated. Expect a sticky dough at this stage.
Rest for 20 minutes.
3. Stretch and Folds (Bulk Begins)
Over the next 2 hours, perform four sets of stretch and folds, spaced 30 minutes apart.
To stretch and fold:
- Grab one edge of the dough
- Stretch it upward gently
- Fold it over itself
- Rotate the bowl and repeat 3–4 times
By the final fold, the dough should feel smoother, stronger, and elastic.
Butter Preparation
While the dough is resting, prepare the butter block.
Place the cold butter between two sheets of parchment paper. Using a rolling pin, pound and roll it into a 20 × 20 cm (8 × 8 inch) square. Keep edges as straight as possible. If the butter gets too soft, refrigerate briefly.
You want the butter and dough to be similar firmness when laminating—cold but bendable.
Lamination Process
4. Roll Out and Enclose Butter
Lightly flour your work surface. Turn out the dough and gently roll it into a 30 × 30 cm (12 × 12 inch) square.
Place the butter square in the center at a diamond angle (corners pointing to the sides). Fold the corners of the dough over the butter like an envelope, sealing it completely. Pinch seams gently.
5. First Lamination Fold (Single Fold)
Roll the dough gently into a rectangle approximately 20 × 60 cm (8 × 24 inches). Work slowly to avoid butter breakage.
Fold the dough like a letter:
- Top third down
- Bottom third up over it
Wrap and refrigerate for 30 minutes.
6. Second Lamination Fold
Remove dough from the fridge and rotate it 90 degrees. Roll again into a long rectangle and repeat the same single fold.
Refrigerate another 30–45 minutes.
Optional but advanced: For extra flakiness, you may add a third fold—but this increases risk of butter melting or tearing. Two folds already give beautiful layering.
Bulk Fermentation
After lamination, allow the dough to rest at room temperature until it has risen about 50% in volume. This usually takes 2–3 hours, depending on room temperature and starter strength.
The dough should feel puffy, aerated, and alive—but not overly jiggly.
Day 2: Shaping, Proofing, and Baking
7. Cold Proof Overnight
Gently pre-shape the dough into a loose round. Let rest uncovered for 20 minutes.
Final shape into a tight boule or batard, being careful not to degas excessively. Place seam-side up into a floured banneton or towel-lined bowl.
Cover and refrigerate 8–14 hours.
Baking Day
8. Preheat Oven
Preheat your oven to 250°C / 480°F with a Dutch oven inside for at least 45 minutes.
Cold dough + blazing hot oven = maximum oven spring.
9. Score and Bake
Remove dough from fridge. Turn out onto parchment paper. Score confidently with a sharp blade—one deep slash works beautifully for this loaf.
Transfer to the hot Dutch oven, cover with lid, and bake:
- 20 minutes covered
- Reduce temperature to 230°C / 450°F
- Bake 20–25 minutes uncovered until deeply golden
Internal temperature should reach around 96–98°C (205–208°F).
Cooling (Don’t Skip This!)
Cool on a wire rack for at least 2 hours before slicing.
Yes, it’s hard.
Yes, it’s worth it.
The crumb continues setting as it cools, and slicing too early can compress those gorgeous layers.
What to Expect
- Crust: Crisp, deeply caramelized, slightly blistered
- Crumb: Open, feathery, with visible butter layers
- Flavor: Tangy, rich, subtly sweet, unmistakably buttery
This loaf shines with:
- Salted butter and flaky salt
- Honey or jam
- Savory toppings like soft cheese or smoked salmon
- Or simply toasted, plain, and admired
Tips for Success
- If butter leaks during baking, don’t panic—it happens and still tastes amazing.
- Keep everything cool during lamination; chill whenever dough feels greasy.
- Use high-fat European-style butter if possible.
- This bread freezes well once baked and cooled.
