Crosodocrosodo
Recipe10 min read·June 7, 2026
Sarah Baker · Crosodo Editor

Sourdough croissants with cold fermentation

A pure sourdough croissant — no commercial yeast, deeper flavor, 4-day timeline. The lamination technique is the same; the proof is different.

Yeasted croissants are about texture. Sourdough croissants are about flavor — the same buttery flake with a faint, complex tang that you only get from a long, cold fermentation. Add one extra day to your timeline and the trade is worth it.

Why this works

Sourdough croissants need a longer proof because wild yeast moves slower at low temperatures. The advantage is that lamination is easier — the cold ferment keeps the butter firmer for longer, so layers stay distinct. The flavor payoff is significant: more complexity, less yeasty sweetness.

At a glance

Yield
12 croissants
Prep
2h
Cook
20 minutes
Total
PT4D

Ingredients

Bread flour
500 g
Cold whole milk
140 g
Cold water
100 g
Active starter (peak)
100 g
Sugar
50 g
Salt
12 g
Soft unsalted butter (dough)
40 g
European butter (block)
280 g
Egg wash
1

Equipment

  • Stand mixer with dough hook
  • Long rolling pin
  • Bench scraper
  • Parchment, plastic wrap, sheet pan
  • Pizza wheel

Directions

Common questions

Pre-shape with starter at peak
The fermentation timeline is forgiving if your starter was at peak when you mixed the détrempe. Past-peak starter weakens the dough enough that butter pokes through during lamination.

Baker notes

  • Use the same butter as yeasted croissants: 82%+ European-style.
  • If proof seems slow, push to 6 hours rather than raising temperature — the layers depend on butter staying firm.
  • The flavor improves further if baked from cold — proof, refrigerate 30 minutes, then bake.

FAQ

Is the flavor really different?

Yes — noticeably. A blind taste test almost always picks the sourdough version for depth, even when the yeasted version is technically more uniform.

Where to go next

Once you have made a yeasted croissant well, the sourdough version is the natural next step. Same skill, deeper payoff.

Lamination Nation tee
For the slow-ferment crowd.
Open Crumb Club — for the holes-and-evidence crowd
Wear it on slice-photo day.

Crosodo Blog entries are recipe and craft notes from working cottage bakers. Recipes assume working with an active starter and basic equipment. Cottage food sales are governed by your state's law — see our state directory for legal details.