Strength is dissolved coffee concentration. A cup can be strong and sour or weak and bitter, so ratio and extraction changes should be separated.
What to evaluate
Keep the decision connected to the actual coffee, brewer and serving goal.
- Balanced but weak means more coffee or less water
- Balanced but strong means dilution or lower dose
- Diagnose sour or bitter first
- Use identical cup size
A repeatable workflow
Use one baseline, then change only what the evidence supports.
- Taste for balance
- Adjust ratio slightly
- Keep grind and time
- Record the recipe
Common mistakes
These errors make comparisons unreliable or create avoidable problems.
- Grinding finer only to make it strong
- Adding water to fix sourness
- Using inconsistent scoops
- Comparing different mug fills
The ratio calculator changes strength predictably.