Scale with less confusion
Weight and flour-based percentages preserve ingredient relationships across different batch sizes.
Bakery formulation and scaling
Scale the recipe without losing the product you love.
Baker’s percentages make recipe math easier, but consistent bread and pastry also depend on temperature, equipment, timing, handling, and the amount you can actually sell.
The short version
In plain English: write ingredients as weights and percentages, include everything inside preferments, and test how a larger batch behaves in your real kitchen.
What you will be able to do: By the end, you should be able to read baker’s percentages, calculate complete hydration, plan a scale test, and connect actual sellable yield to production and pricing.
This guide is useful when you are:
- Turning a cup-based recipe into a production formula
- Including starter or levain in hydration
- Scaling up while watching dough temperature and yield
Why this is worth learning
The business value behind the work
Understand the dough
Complete hydration and temperature records explain behavior that a simple ingredient list cannot.
Price the real result
Actual sellable yield reveals the true material, labor, and packaging cost of each item.
A simple path
- 01
Weigh the full recipe
- 02
Convert it to flour-based percentages
- 03
Test the larger batch in real equipment
- 04
Record sellable yield and quality
Lesson 01
Put the recipe into baker’s percentages
What this means
Weigh every ingredient. Add together all flour in the recipe and call that amount 100%. Divide each other ingredient’s weight by the total flour weight to get its baker’s percentage. Include flour and water hidden inside starter, levain, or other preferments when calculating the complete formula.
Why it matters
Baker’s percentages create a common language: total flour is always 100%, and every other ingredient is compared with it. This makes formulas easier to compare and scale, but only when flour and water inside preferments are included correctly.
How to approach it
- 1Convert volume measures to tested weights and choose one weight unit.
- 2Add all flour from the final mix, starter, levain, soakers, and other components.
- 3Divide each ingredient by total flour and multiply by 100; keep actual weights alongside the percentages.
Worked example
Example: With 1,000 g flour, 700 g water, 20 g salt, and 10 g yeast, the formula is 100% flour, 70% water, 2% salt, and 1% yeast.
Common mistake
Listing levain only as one ingredient. This hides its flour and water, making overall hydration and ingredient percentages misleading.
What good looks like
Another baker can use the percentages and target batch size to reproduce the same ingredient relationships, including preferments.
Convert one proven recipe before changing its size or ingredients.
Lesson 02
Understand hydration
What this means
Hydration is the water weight divided by flour weight. It is a useful comparison, but the same percentage can feel different with whole grain flour, sugar, fat, salt, inclusions, or a different flour supplier. Treat small water changes as tests and record the result.
Why it matters
Hydration is a useful ratio, not a complete prediction of dough feel. Flour type, protein, damaged starch, whole grains, sugar, fat, salt, fermentation, and temperature change how water behaves.
How to approach it
- 1Count total formula water and total flour, including preferments.
- 2Calculate water divided by flour, then record flour identity and important water-binding ingredients.
- 3Adjust in small measured steps and compare mixing, handling, fermentation, volume, crumb, and shelf life.
Worked example
Example: 750 g total water divided by 1,000 g total flour equals 75% hydration. If a levain contains 100 g water and 100 g flour, both amounts belong in those totals.
Common mistake
Copying the hydration percentage of a popular formula and expecting the same dough while using different flour, inclusions, equipment, or fermentation.
What good looks like
The chosen hydration repeatedly produces the defined dough handling and finished quality with the documented flour and process.
Write down the flour blend, room conditions, dough feel, and result when testing hydration.
Lesson 03
Watch temperature and equipment
What this means
A larger batch may mix differently and warm faster. Mixer size, friction, room temperature, flour temperature, preferment temperature, dough mass, proofing space, divider accuracy, pan loading, and the oven can all change the result.
Why it matters
Dough temperature affects fermentation speed and consistency. Larger dough masses and fuller mixers can add more heat, so water temperature, mixing time, and proof schedule may need to change during scale-up.
How to approach it
- 1Set a target finished dough temperature appropriate to the tested product and process.
- 2Measure room, flour, preferment, water, and finished dough temperatures along with mix time.
- 3Pilot the larger load, compare friction and fermentation, and adjust the controlled process rather than guessing during production.
Worked example
Example: A 5 kg dough finishes at 76°F, but a 20 kg dough reaches 82°F in the same mixer. That temperature difference can speed fermentation, so the larger process needs its own tested mixing and water-temperature plan.
Common mistake
Using the same water temperature year-round or at every batch size while ignoring room, flour, preferment, and mixer heat.
What good looks like
Finished dough temperature lands in the tested range and fermentation reaches defined milestones predictably across normal conditions.
During scale-up, record times and temperatures along with ingredient weights.
Lesson 04
Measure what you can sell
What this means
Track total dough weight, bench loss, number of pieces, baked weight, cooling loss, rejects, and sellable output. The result affects ingredient planning, labor, packaging, order promises, and profit.
Why it matters
Theoretical dough weight does not equal sellable output. Bench loss, divider variation, baking loss, cooling, damage, and quality rejects determine how many items actually pay for the batch.
How to approach it
- 1Weigh total dough and record the number and weight of divided pieces.
- 2Measure baked and cooled output, then separate full-quality units, seconds, rework, and waste.
- 3Use several representative batches to set expected yield and update cost and scheduling assumptions.
Worked example
Example: A batch has 12 kg of dough and should make 24 loaves at 500 g, but only 22 pass inspection. Use 22—not 24—when checking the real cost and production plan.
Common mistake
Pricing from the target number of loaves while routinely producing fewer full-quality units or giving away overweight pieces.
What good looks like
Planned and actual sellable yield stay within an understood range, and costing and order capacity use that real result.
Use several normal batches to set the expected yield, then investigate repeated misses.
Questions people ask
Frequently asked questions
Why can baker’s percentages total more than 100%?
Because flour alone is set to 100%. Water, salt, yeast, and every other ingredient are added as percentages of that flour amount, so the total formula commonly exceeds 100%.
Does 75% hydration always produce the same dough?
No. It states a water-to-flour ratio. Flour, whole grains, sugar, fat, inclusions, temperature, mixing, and fermentation can make two 75% doughs behave very differently.
Can I double every ingredient in a bakery formula?
The weights may be a valid first calculation, but mixing, heat, fermentation, dividing, proofing, and baking may not scale evenly. Test the new load in the real equipment before adopting it.
Quick definitions
Terms worth knowing
- Baker’s percentage
- Each ingredient’s weight compared with the total flour weight, which is always 100%.
- Hydration
- Total water weight divided by total flour weight.
- Preferment
- A portion of flour, water, and usually yeast or culture prepared before the final mix.
Try it with your numbers
Free tools for this workflow
These tools help with the math and organization. Save your inputs and assumptions, and use qualified advice where safety, tax, or legal requirements are involved.
Baker hydration and absorption
Include flour blends, levain, and desired dough temperature.
Open tool →Formula percentages
Convert a formula to baker-style or total percentages.
Open tool →Recipe scaling
Scale from a batch whose real yield is known.
Open tool →Leavening and strong ingredients
Plan a cautious adjustment for ingredients that may not scale evenly.
Open tool →Baked yield and fill
Measure process loss and sellable units.
Open tool →Custom cake pricing
Add ingredients, decoration, labor, and shared expenses.
Open tool →Keep going in Batch Scale
Helpful pages and next steps
Explore the bakery workflow
See how formulas, production, orders, inventory, and costing connect.
Visit page →Build repeatable batch records
Save the version, actual ingredients, time, checks, loss, and output.
Visit page →Price the sellable yield
Turn the actual number of good items into a useful product cost.
Visit page →Go deeper
Related practical guides
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Read guide → Recipes & ProductionBuild a 30-Day Production Calendar That Survives Real Life
Plan confirmed work, material arrivals, shared equipment, waiting time, quality gates, maintenance, and recovery space across one realistic month.
Read guide → Recipes & ProductionNobody Warns You About the Second Batch: What Happens After Your First Sellout
The first sellout creates applause. The second batch creates obligations. Here is how to repeat quality, fund restocking, and turn a moment into a business.
Read guide → Recipes & ProductionFrom Hobby to Repeatable Product: Keep the Magic, Build the Method
Turn an intuitive recipe or handmade process into a repeatable product while preserving the judgment, character, and creativity that made it special.
Read guide → Recipes & ProductionHow to Cost Rework Without Hiding Production Loss
Track material, labor, yield, quality, and lot history when product is safely and legitimately reworked.
Read guide →Check the source
Trusted places to learn more
Rules and guidance can change. Open the current source and get qualified help for your exact product, process, location, and claims.
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King Arthur Baking: Baker’s Percentage ↗
A professional baking reference with formulas and worked baker’s-percentage examples.
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King Arthur Baking: Professional Baker’s Reference ↗
Practical references for dough temperature, preferments, batch costing, conversions, salt, water, and yeast.
-
FDA: Current Good Manufacturing Practices for Food ↗
Official U.S. starting point for food sanitation, equipment, facilities, and production controls.
Ready to organize the work?
Keep the recipe, cost, inventory, orders, and records connected.
Batch Scale turns one-time calculations into a repeatable workflow your team can follow.