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For lean dough, hydration describes water as a percentage of flour weight. It helps you compare bread formulas, but it does not tell you exactly how a dough will feel. Flour type, mixing, temperature, and resting time all affect how much of that water seems available at the surface.

Use hydration as a starting description, not a contest to make the wettest possible dough. A manageable dough suited to your bread is more useful than a high number.

Calculate water against flour

Divide the water weight by the flour weight, then multiply by 100. A dough with 500 grams of flour and 325 grams of water has 65% hydration. With the same flour and 350 grams of water, it has 70% hydration.

Salt and yeast are not part of the flour total. Neither are seeds, nuts, or dried fruit. If a formula contains multiple flours, add their weights together before calculating.

Preferments count too. Suppose a dough contains 450 grams of flour, 300 grams of water, and 100 grams of starter maintained at equal flour and water weights. That starter contributes another 50 grams of flour and 50 grams of water. The complete dough therefore contains 500 grams of flour and 350 grams of water: 70% hydration.

Ignoring the starter would produce a misleading comparison with another recipe.

Know where the simple calculation stops

Lean dough made with flour, water, salt, and yeast is straightforward. Milk and eggs contain water, but they also contain solids and fat. Counting their entire weight as water does not describe the actual water content accurately.

You do not need to calculate the chemistry of an enriched dough to bake it successfully. Follow its formula and compare it with similar recipes rather than treating its liquid percentage as directly equivalent to a flour-and-water dough.

Added butter also changes handling without functioning like an equal weight of water. A soft, rich dough may feel sticky for reasons that a simple hydration number cannot explain.

Compare doughs made with the same flour

A 70% dough made with one bread flour may hold its shape better than a 70% dough made with another flour. Protein, milling, and other flour characteristics affect absorption.

Whole-grain flour often needs additional water and time to hydrate. Bran can make a freshly mixed dough feel rough, while the dough becomes more cohesive during a covered rest. Do not judge it only in the first minute.

For your first comparison, use the same flour and keep the salt, yeast, mixing method, and dough temperature similar. Otherwise, a change attributed to water may actually come from an entirely different ingredient or process.

Give water time to distribute

After mixing a lean dough, follow any rest specified by the recipe before deciding it is unworkably sticky. Cover the bowl so the surface does not dry while the interior hydrates.

Handle a small section with lightly dampened hands or a scraper. If the dough stretches and gathers despite clinging, it may simply need development. If it pours like batter when the recipe describes a firm dough, recheck the ingredient weights.

Avoid adding flour after every sticky touch. Repeated dusting can quietly transform a soft bread formula into a stiff one, leaving the final loaf dry and dense.

Make a measured adjustment

If you want a slightly softer version of a familiar 500-gram-flour dough, an additional 10 grams of water raises hydration by two percentage points. That is a small, traceable change. An unmeasured splash is not.

For a recipe you already know runs too wet with your flour, hold back a small measured portion of its water and add it during mixing only if needed. Record the amount actually used. Do not routinely withhold water from every new recipe.

Choose the handling method to match the dough: a wetter dough may benefit from folds and a scraper, while a firmer dough is easier to knead and shape by hand. The goal is enough water for the desired crumb and enough strength to hold the intended shape.