How it works
Brew. Taste.
Change one thing.
Every cup gives you one clearer next step.
- 01BrewFollow the recipe1:10Pour to 150g
- 02RecordSave what happenedActual2:47Grind12
- 03NoticeWhat stood out?Too sourBalanced
- 04AdjustChange one variableGrind12 → 11
- 05CompareBrew againCup 01Cup 02
A real adjustment
See what one change can teach you.
Turn the taste of this cup into one clear idea to test in the next.
1Cup 01
What stood out?Too sour
- Dose
- 15g
- Ratio
- 1:16
- Grind
- 12
- Water
- 94°C
2Next brew
Try one change
Grind12→Grind11
Dose · ratio · temperature · pouring stay unchanged
3Cup 02
What changed?Sweeter &
more balanced
A clearer signal.
Keep it—or test one new adjustment.
A suggestion is something to test, not a single “correct” answer.
Why one change?
Make the result easier to read.
×
Change everything
- Grind12 → 10
- Water92 → 96°C
- Ratio1:16 → 1:15
- Pours3 → 5
What made it better? Unclear
✓
Change one thing
- Grind12 → 11
- Dose15g unchanged
- Ratio1:16 unchanged
- Water94°C unchanged
What changed? A clearer signal
Borrowing a simple idea from experimental design: keep most conditions steady so each result is easier to interpret.
Variables can interact. Every suggestion is a hypothesis to test—not the answer.
Keep learning
Your taste.
Your recipe.
Learn from every cup and build a method that works for you.
Start your first brew →