medium-fine grind · 320-960 microns
Fellow Opus grind setting for AeroPress
Start at 3.5 on the Fellow Opus for AeroPress, and stay inside 2-5. Brew at 1:15 for 1:30-2:30.
Middle of Fellow's range.
- Ratio
- 1:15
- Time
- 1:30-2:30
- Water
- 85-95 C
Taste, then fix
If it tastes wrong
| It tastes | Why | Do this on the Opus |
|---|---|---|
| Sour, thin, sharp | Under-extracted: grind too coarse or steep too short | Go 2 to 3 steps finer, or add 30 to 60 seconds of steep time |
| Bitter, dry, harsh finish | Over-extracted: grind too fine or steep too long | Go 2 to 3 steps coarser, or cut 30 seconds of steep time |
| Hard to press | Grind too fine | Go 2 steps coarser; the press should take about 30 seconds of gentle pressure |
| Weak but not sour | Not enough coffee for the water | Tighten the ratio: use 1 to 2 more grams per 250 g of water |
What you are aiming for
The AeroPress is forgiving and works across a wide grind range. Finer grinds pair with shorter steeps, coarser grinds with longer ones.
On the Fellow Opus, 3.5 is the documented start. If your grounds look much finer or coarser than this, your grinder may be calibrated differently: trust the taste, then the number.
Fix the beans too
Better AeroPress starts with fresher beans.
The right grind only gets out what the beans have. A subscription keeps fresh coffee arriving before you run out.
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More Fellow Opus settings
Questions
What grind setting should I use on the Fellow Opus for AeroPress?
Start at 3.5 on the Fellow Opus for AeroPress, and stay inside 2-5. Brew at 1:15 for 1:30-2:30.
My AeroPress tastes sour on the Fellow Opus. What do I change?
Sour means under-extracted. Go 2 to 3 steps finer, or add 30 to 60 seconds of steep time. Change one thing at a time and taste again.
My AeroPress tastes bitter on the Fellow Opus. What do I change?
Bitter means over-extracted. Go 2 to 3 steps coarser, or cut 30 seconds of steep time.
Source
cdn.shopify.com, fellowproducts.com, help.fellowproducts.com. Settings are starting points; two grinders of the same model can sit a step or two apart.