Recipe hydration
Ciabatta — Hydration Guide
Target 82%. Workable range 78–85%.
Why this hydration for Ciabatta?
Ciabatta (Italian for 'slipper') is defined by its high hydration, massively open irregular crumb, and thin crackling crust. 82% is typical; advanced bakers push to 85%. Unlike hearth boules, ciabatta is shaped by hand-stretching the fermented dough on a heavily floured counter and cutting into rectangles — no banneton, no slashing. Hamelman's biga-based ciabatta is the reference; his hydration target is 82% with 15% biga preferment and 2% salt. Requires a baking stone, high heat, and initial steam injection.
Flour mix: 90% bread flour · 10% whole wheat.
What 82% hydration does for Ciabatta
At its 82% target, Ciabatta bakes up with a very open, holey, translucent crumb — the hallmark of a high-hydration hearth loaf, at the cost of slack, sticky dough that needs confident handling. 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 hearth structure can hold.
Worked water math for a 500 g batch
| Flour | 500 g (100%) |
| Water | 410 g (82%) |
| Salt | 10 g (2%) |
| Levain | 90 g (~18%) |
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 82% exactly.
How this flour mix drinks
Ciabatta uses 90% bread flour · 10% whole wheat. The 10% whole-grain portion (whole wheat) absorbs more water than white bread flour, so the dough feels a touch stiffer than its 82% number suggests — give it a longer autolyse and hold back a little water to add later if needed.
Technique at 82%
Mix everything (no autolyse needed at this protein level). 3-4 sets of stretch-and-folds in 2.5h bulk at 76°F. Dump onto heavily floured counter, gently stretch into rectangle. Cut into 3-4 rectangles with bench scraper (no deflating). Short proof 60-90 min on linen couche. Bake on preheated stone with steam for first 10 min at 475°F; total 20-22 min until deep golden.
Calculator pre-set to 82%
- Flour to add
- 450 g
- Water to add
- 360 g
- Salt
- 10 g
- Levain @ 100%
- 100 g
- Total dough
- 920 g
- Effective hydration
- 82%
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.
Ciabatta hydration — FAQ
What hydration is Ciabatta meant to be?
Target 82% — that's 82 g of water per 100 g of flour by weight. The workable range is 78–85% depending on your flour and handling skill.
How much water do I need for Ciabatta?
Multiply your flour weight by 0.82. For a 500 g flour batch that's 410 g water, plus about 10 g salt (2%). The calculator on this page also subtracts the water your levain already contributes.
Can I make Ciabatta at a lower hydration?
Down to about 78% gives a tighter crumb and much easier, less sticky handling — a good starting point if you're new to this style. Below 78% the open, characteristic Ciabatta texture is largely lost.
Can I make Ciabatta at a higher hydration?
Up to about 85% opens the crumb further but demands confident wet-dough handling (more folds, a well-floured bench, decisive shaping). Above 85% the structure usually slackens and the loaf spreads instead of rising.