Advanced Techniques
Sourdough Croissants: Laminated, Flaky, Worth the Effort
Buttery, shatteringly flaky croissants leavened with sourdough. A detailed lamination guide for the ambitious baker.
Sourdough croissants are laminated pastries leavened with starter, giving them a flaky, buttery structure with a subtle tang and complex flavor. They're a multi-day project requiring careful lamination and temperature control — the most advanced bake in the sourdough repertoire, but deeply rewarding.
Recipe (makes ~9)
Dough (détrempe):
- 500g bread flour
- 100g active starter
- 200g cold milk
- 50g sugar
- 10g salt
- 30g soft butter
Lamination:
- 250g cold butter (a high-fat European butter is best)
The multi-day timeline
| Day | Step |
|---|---|
| 1 evening | Mix dough, bulk briefly, refrigerate overnight |
| 2 morning | Make butter block, laminate (3 folds with chilling) |
| 2 afternoon | Roll, cut, shape |
| 2 evening | Proof slowly (4–8 hrs, cool) |
| 3 morning | Bake |
Lamination basics
- Butter block: pound cold butter into a flat square; keep it cold but pliable.
- Lock-in: roll the dough, place the butter inside, fold over to enclose.
- Folds: roll out and fold in thirds (a "letter fold"). Chill 30+ minutes. Repeat for 3 folds total. Chilling between folds keeps the butter layers distinct.
- Shape: roll thin, cut triangles, roll up into croissants.
Critical rules
- Keep everything cold. Warm butter melts into the dough and ruins the layers.
- Proof cool and slow. Too warm and the butter leaks out; too cold and they won't rise.
- Bake hot (400°F) for steam-puffed, flaky layers.
Frequently asked questions
Why did my butter leak out?
The dough got too warm during lamination or proofing. Chill more aggressively and proof below 78°F.
Are sourdough croissants more sour?
Only subtly — they're more complex and tangy than yeasted croissants, not aggressively sour.
Can a beginner make these?
They're advanced. Master basic loaves and shaping first, then attempt lamination.
Lamination is all about temperature and timing. SourdoughAI helps you schedule the multi-day process and time the slow proof so the butter behaves.