Iterative optimization process

Why Iteration Matters

• Coffee brewing involves many variables (dose, grind, water temp, time).
• Changing all at once leads to confusion and inconsistency.
• Iterative adjustments isolate variables, making improvements measurable and repeatable.

Step 1: Establish a Baseline

• Start with a standard recipe (e.g., SCA Golden Cup for filter, 1:2 ratio for espresso).
• Measure key outputs: brew time, yield, TDS, EY.
• Record initial sensory impressions.

Step 2: Identify Key Issue

• Sour → likely under-extracted.
• Bitter/ashy → likely over-extracted.
• Thin body → grind too coarse or low dose.
• Muddy/heavy → grind too fine or long contact.

Step 3: Adjust One Variable

• Only change one variable at a time:
• Grind size.
• Dose.
• Yield/ratio.
• Temperature.
• Keep other parameters stable.

Step 4: Re-Test and Record

• Brew again with new setting.
• Compare against baseline using both TDS/EY measurements and sensory notes.
• Document results carefully.

Step 5: Iterate Until Target Reached

• Continue adjusting step-by-step until brew falls into desired strength and extraction range and matches sensory goals.
• Use triangle tastings if comparing small differences.

Example (Espresso)

• Baseline: 18 g dose → 36 g yield in 28 sec, sour.
• Adjustment 1: Finer grind → 30 sec shot, balanced acidity.
• Adjustment 2: Slightly higher yield (38 g) → brighter, sweeter, improved clarity.
• Final Spec: 18 g dose, 38 g yield, 30 sec.

Summary

The iterative optimization process ensures continuous improvement by adjusting one variable at a time, recording results, and refining recipes through data and sensory feedback. This method transforms trial-and-error into a systematic pathway to consistent, high-quality coffee.

• Tags:
• Grind Size
• High Quality
• Matters Coffee
• Dose Yield
• Coffee Brewing
• Continuous Improvement
• Tds Ey
• Quality Coffee
• Finer Grind
• Step Step
• Slightly Higher
• Consistent High
• Water Temp
• Dose Grind
• Sensory Notes
• Golden Cup
• Sensory Feedback
• Yield Sec
• Extracted Bitter
• Strength Extraction
• Higher Yield
• Size Dose
• Example Espresso