Practical research · 2 October 2026
Sifting Fresh-Milled Flour: Measure Extraction Before Changing Your Recipe
Sifting fresh-milled flour removes some larger particles, including bran, but it does not automatically turn your flour into commercial all-purpose flour. Weigh the flour before and after sifting and treat the result as a distinct ingredient. A recorded extraction rate makes the next batch repeatable.
What does sifting change?
King Arthur Baking describes sifting whole-grain flour to remove some bran and change bread structure. The result depends on the grain, milling setting and sieve. Its example is an observation from that baker’s setup, not a universal percentage you should expect from yours.
Keep the question narrow: are you trying to reduce coarse particles for a particular recipe, or do you want a lighter loaf? A finer mill setting, sifting and changing the grain are separate interventions. Test them separately so you know which one helped.
Calculate your own extraction rate
For a home test, call the flour passing through the sieve the retained flour. Divide that weight by the weight entering the sieve, then multiply by 100. For example, 425 g retained from 500 g gives 85%. This is a worked example, not a measured result from a particular mill.
To plan a 500 g retained-flour batch at that same observed yield, divide 500 by 0.85: approximately 588 g needs to enter the sieve. Allow separately for material left in the mill and handling losses; the arithmetic assumes your next batch behaves like the first.
| Record | Example only |
|---|---|
| Flour entering sieve | 500 g |
| Flour passing through | 425 g |
| Retained flour percentage | 85% |
| Coarse fraction and handling loss | 75 g combined |
Choose a sieve by the job
A kitchen sieve is useful for experiments, but a named mesh or aperture is easier to reproduce than “fine.” Check whether the seller specifies mesh count, opening size or only a marketing description. Two products called fine may retain different amounts.
Keep the same sieve, batch size and sifting technique during comparisons. Do not force coarse particles through with pressure and then compare that batch with one gently shaken. Label the sample with grain variety, mill setting, sieve and date.
Weigh the flour that actually goes into the dough
Use the weight after sifting when calculating the recipe. King Arthur recommends weighing ingredients for consistency; cup measurements add another variable to an already changing flour. Keep a small amount of water back if that is compatible with the recipe and record the final amount used.
For a fair trial, bake a modest batch with your usual flour and another with the sifted flour. Keep mixing, fermentation, shaping and baking as similar as practical. Compare the cooled crumb and your preferred texture rather than treating height alone as the definition of success.
Do you need a different grain mill?
Try a measured sifting comparison before replacing the mill. A new mill may be worthwhile for throughput, permitted ingredients, cleaning or finer adjustment, but a sieve cannot establish that one motor or burr material is inherently superior.
When comparing mills, ask what the demonstrated flour was milled from and whether it was sifted. Compare the full workflow and flour yield, not just a photograph of powder. If the current setup produces the texture you enjoy at an acceptable pace, keeping it is a valid buying decision.