Each dose is a random mix of bean sizes
Each dose uses the same size profile
18 g is only matched by weight
18 g is matched by weight and size composition
Roasted whole-bean sieve that helps AeroPress brewers make repeated doses more comparable before grinding.
This is the core guide. Everything else on the page supports these five steps.
Stack the trays from largest opening to smallest opening. Tray 1 goes on top. Tray 8 goes near the bottom. The catch tray sits underneath.
Largest openings on top. Smallest openings at the bottom.
| Tray | Aperture |
|---|---|
| 1 | 8.8 mm |
| 2 | 8.4 mm |
| 3 | 8.0 mm |
| 4 | 7.6 mm |
| 5 | 7.2 mm |
| 6 | 6.8 mm |
| 7 | 6.0 mm |
| 8 | 5.0 mm |
| Catch tray | below 5.0 mm |
Pour the roasted beans into the top tray. Shake the stack until the beans settle into their size fractions.
Reveal the sample’s size profile. Do not treat the trays as “good” or “bad” by default.
Weigh the beans from each retained tray. Enter the tray weights into the Bean Sieve calculator.
Weigh only the beans, not the tray.
Start with a matched profile. The calculator uses the tray weights to keep the same proportional size mix in each brew dose.
Use matched doses as your baseline before testing size-profile changes.
Choose your target brew dose in the calculator. Use the output to prepare matched doses from the retained trays.
Each dose now starts from the same whole-bean size profile.
Use the sieve to separate. Use the calculator to recompose.
Matched profile is the default baseline.
Use the calculator before preparing doses.
Keep the size profile stable when testing normal recipe changes.
Change the size profile only when you want to test size itself.
Label prepared doses clearly.
Enter:
The calculator shows:
The calculator does not decide what tastes best.
It helps you build the profile you chose.
Then change one size region on purpose.
For example, you can reduce smaller retained fractions, reduce larger retained fractions, or build a middle-weighted profile.
Keep the rest of the recipe stable and taste against the baseline.
Bean Sieve is for controlling the beans before grinding.
Ground-coffee sifters control the particles after grinding.
Visual sorting still matters for visible defects.
Use the tool that matches the variable you need to control.
The longer technical version with context, tray logic, calculator workflow, evidence posture, and limitations.
Final print/download link will go here.
Use these pages when you want to connect whole-bean dose matching to repeatable competition prep, cleaner grounds handling, or tighter press-phase control.
A practical explanation of hidden variability in AeroPress brewing and how to reduce it.
Read Why AeroPress brews stop matchingA practical training structure for competition brews, logging, workflow, and serving.
Read AeroPress championship prep frameworkAeroSweep improves chaff removal geometry and optional fines reduction before brewing.
View AeroSweep chaff and fines workflowAeroBox turns grams-out and press speed into measurable recipe variables.
View AeroBox precision press standReturn here after the next guide lands.