Why Scales Matter
Precision measurement transforms espresso from guesswork into reproducible science. Using a scale with timer enables you to dial in espresso shots with confidence, documenting exactly what works for each coffee bean.
Consistent Dose
Volume varies with grind and bean density, weight doesn't
Impact: Same input every time = repeatable results
Brew Ratio Control
Track exact input:output ratio (e.g., 1:2 for 18g in, 36g out)
Impact: Dial in extraction precisely
Troubleshooting
When shots taste off, data helps identify the problem
Impact: Fix issues faster by knowing variables
Grinder Retention Check
Measure what goes in vs what comes out
Impact: Identify grinder retention issues
With vs Without Scale
Dose Accuracy
Without: Eyeballing or using scoop (~±2-3g variance)
With: Exact to 0.1g every time
Improvement: 300% more consistent
Output Measurement
Without: Timing or visual estimation
With: Exact yield to 0.1g
Improvement: Perfect brew ratios
Troubleshooting
Without: Guessing what went wrong
With: Data points to identify issues
Improvement: Much faster problem solving
Recipe Repeatability
Without: Inconsistent results day to day
With: Same recipe = same results
Improvement: True consistency
Recommended Scales
Timemore Black Mirror Basic
$35-45Features: 0.1g precision, built-in timer, coffee mode
Verdict: Best budget option
Acaia Lunar
$225Features: 0.1g precision, auto-tare, water resistant, app connectivity
Verdict: Premium choice
AWS SC-2KGA
$15-20Features: 0.1g precision, basic but reliable
Verdict: Ultra-budget option
Weightman Coffee Scale
$15-25Features: 0.1g precision, built-in timer
Verdict: Great value
How to Use
Weigh Dose
Place portafilter on scale, tare, grind until target weight
Target: 18-20g for double basket (adjust per basket)
Track Output
Place cup on scale under group head, tare, start shot
Target: 36-40g output for 1:2 ratio
Time Extraction
Start timer when pump engages, stop at target weight
Target: 25-35 seconds total
Document Results
Note dose, yield, time, and taste
Target: Build reference for each coffee
When You Might Not Need One
Super-Automatic Machines
Reason: Machine controls dose and output automatically
Caveat: Still useful for dialing in bean hopper settings
Pressurized Basket Only
Reason: Forgiving system masks small variations
Caveat: Still helps consistency
Very Casual Use
Reason: If you don't care about optimization
Caveat: Results will vary more
