Recipe hydration
Sourdough Brioche — Hydration Guide
Target 55%. Workable range 50–60%.
Why this hydration for Sourdough Brioche?
Sourdough brioche is an enriched dough with high butter (40-60% of flour weight), high egg (3-4 eggs per 500g flour), and sugar. Hydration appears low (55%) because eggs provide most moisture — effective hydration including eggs is 70-75%. Slower ferment than lean doughs because fat inhibits yeast. Use a stiff levain (50% hydration) for cleanest flavor. Overnight cold retard is essential — develops flavor and allows the butter-laden dough to firm up for shaping.
Flour mix: 100% bread flour.
What 55% hydration does for Sourdough Brioche
At its 55% target, Sourdough Brioche bakes up with a tight, tender, even crumb that slices cleanly — the low water keeps the dough firm and structured rather than open. That's why the style sits where it does on the scale — push it much drier and it tightens toward a sandwich loaf; push it much wetter and it slackens past what the enriched structure can hold.
Worked water math for a 500 g batch
| Flour | 500 g (100%) |
| Water | 275 g (55%) |
| Salt | 9 g (1.8%) |
| Levain | 125 g (~25%) |
The levain already carries some of that flour and water. The calculator below subtracts its contribution so the numbers you actually weigh at the bench hit 55% exactly.
How this flour mix drinks
Sourdough Brioche uses 100% bread flour. That's straight white bread flour, which handles predictably at 55% — add all the water up front and adjust only if a new bag of flour behaves differently.
Technique at 55%
Stand mixer mandatory. Combine flour, eggs, levain, salt, sugar in mixer. Knead 5 min on medium. Gradually add softened butter 1 tbsp at a time over 10 min. Knead until window-pane. 2h bulk at 76°F with 2 folds. Shape into log, loaf pan, or braided brioche mold. Cold retard overnight (12-16h at 38°F). Bake from cold at 375°F until internal 195°F (~35 min). Egg wash before bake for shine.
Calculator pre-set to 55%
- Flour to add
- 450 g
- Water to add
- 225 g
- Salt
- 10 g
- Levain @ 100%
- 100 g
- Total dough
- 785 g
- Effective hydration
- 55%
How the math works
Total water = flour × hydration %. Your levain contributes 50 g flour + 50 g water — both count toward the totals. You add only the remainder as fresh flour and water.
Salt % is computed on total flour weight, not final-dough flour.
Sourdough Brioche hydration — FAQ
What hydration is Sourdough Brioche meant to be?
Target 55% — that's 55 g of water per 100 g of flour by weight. The workable range is 50–60% depending on your flour and handling skill.
How much water do I need for Sourdough Brioche?
Multiply your flour weight by 0.55. For a 500 g flour batch that's 275 g water, plus about 9 g salt (1.8%). The calculator on this page also subtracts the water your levain already contributes.
Can I make Sourdough Brioche at a lower hydration?
Down to about 50% gives a tighter crumb and much easier, less sticky handling — a good starting point if you're new to this style. Below 50% the open, characteristic Sourdough Brioche texture is largely lost.
Can I make Sourdough Brioche at a higher hydration?
Up to about 60% opens the crumb further but demands confident wet-dough handling (more folds, a well-floured bench, decisive shaping). Above 60% the structure usually slackens and the loaf spreads instead of rising.