Calibrated ratings leaves out ratings before June 2026, while the rating scale was still settling. Every rated brew, including earlier ones. Leaves out each bag's dial-in brews (the first, or 2 for an 8+ brew bag). Sample minimums still count them. Every rated brew, dial-in included.
Rest curve
Rest curve
- A cell: the roast level's bags' average rating in that window (each bag once), minus its usual.
- Green: better than usual.
- Red: worse.
- Outlined: the row's best window (2+ well-sampled cells).
- It compares bags, not brews of one bag, so it also moves with which coffees rested longer.
- Only 2 bags Low confidence: under 3 bags or 10 rated brews (4 for one coffee).
Nordic LightUltralight
46–60 d61–90 d
Below the roast level's usualAbove
Rating by wait
Rating by wait
- Adjusted rating of this period's brews, by the days a bag had rested at its first brew.
- Freezer days are not counted.
- It compares bags, not brews of one bag.
- Only 2 bags Low confidence: under 3 bags or 10 rated brews (4 for one coffee).
Days off roast at the bag's first brew
Rest window
Rest window
- The share of this period's brews made before, inside and after the roaster's rest window.
- Each with its adjusted rating.
- Brews of bags with no window are left out.
- Only 2 bags Low confidence: under 3 bags or 10 rated brews (4 for one coffee).
- Before 6% —
- Inside 88% 7.0
- After 6% —
2 brews without a rest window
Dial-in
Dial-in
- vs bag: each brew's rating minus its bag's average this period, averaged over the row's brews.
- Only bags brewed 2+ ways (2+ brews each) count.
- Only 2 bags Low confidence: under 3 bags or 10 rated brews (4 for one coffee).
Always all brews
Brews until dialed in, by roast level
Brews until dialed in, by roast level
- Each bag's settle brew: within its first 6 rated brews, the first within 0.5 of their best half's average.
- Per roast level: the middle bag's, in whole brews.
- Bags with 6+ rated brews that started this period.
- Only 2 bags Low confidence: under 3 bags or 10 rated brews (4 for one coffee).
Median settle brew per roast level · Always all brews
Brews until dialed in, by dripper
Brews until dialed in, by dripper
- Each bag's settle brew: within its first 6 rated brews, the first within 0.5 of their best half's average.
- Per dripper: the middle bag's, in whole brews.
- Bags with 6+ rated brews that started this period.
- Only 2 bags Low confidence: under 3 bags or 10 rated brews (4 for one coffee).
Median settle brew per dripper · Always all brews
Brews until dialed in, by water
Brews until dialed in, by water
- Each bag's settle brew: within its first 6 rated brews, the first within 0.5 of their best half's average.
- Per water: the middle bag's, in whole brews.
- Bags with 6+ rated brews that started this period.
- Only 2 bags Low confidence: under 3 bags or 10 rated brews (4 for one coffee).
Median settle brew per water · Water filter not applied · Always all brews
Variables vs rating
Variables vs rating
- vs bag: each brew's rating minus its bag's average this period, averaged over the row's brews.
- Only bags brewed 2+ ways (2+ brews each) count.
- Bands · Exact: group a setting into bands, or list each value (rounded).
- Break down by: the same delta per roast level, process, origin or roaster (rows with 3+ bags).
- Blank: no match.
- Only 2 bags Low confidence: under 3 bags or 10 rated brews (4 for one coffee).
Grind
Show
A4Z (Femobook)
Grind drift
Grind drift
- Mean change in grind setting vs each bag's first brew this period, on this grinder.
- One row per brew number in the bag.
- Only 2 bags Low confidence: under 3 bags or 10 rated brews (4 for one coffee).
Negative = finer. A4Z (Femobook)· Always all brews