Data logging for espresso

How to use data logging to track espresso variables, improve consistency, and support recipe development.

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  • Coffee Basics Nerds
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Article 9 of 12 in Espresso Fundamentals/
Data logging for espresso

Why Data Logging Matters

  • Espresso is highly sensitive to small changes in grind, dose, yield, and time.
  • Logging ensures repeatability, supports troubleshooting, and accelerates dialing-in.
  • Provides evidence for quality control in cafés and competitions.

Key Variables to Log

  • Dose: grams of coffee in basket.
  • Yield: beverage weight (g).
  • Time: shot duration (s).
  • Brew Ratio: ratio of dose to yield.
  • Grind Setting: burr position or grinder reference.
  • Temperature: grouphead or PID setpoint.
  • Pressure / Flow Profile: preinfusion, ramp, hold, decline.
  • Sensory Notes: acidity, sweetness, bitterness, balance, body.
  • Equipment Notes: machine type, burr condition, basket size.

Tools for Logging

  • Manual Logs: notebooks, spreadsheets, recipe cards.
  • Digital Tools: apps (e.g., Barista Hustle, Roast World), café POS integrations.
  • Advanced Systems: machines with built-in shot profiling and cloud data sync.

Benefits

  • Faster recipe replication across shifts and baristas.
  • Easier troubleshooting when shots run too fast, slow, or taste imbalanced.
  • Supports training by showing patterns between variables and flavor.
  • Creates historical database for seasonal coffees.

Best Practices

  • Standardize the format (dose/yield/time always written the same way).
  • Record both objective metrics (grams, seconds, pressure) and subjective notes (flavor, mouthfeel).
  • Review logs weekly to refine recipes and track consistency.

Summary

Data logging transforms espresso from guesswork into a measurable, repeatable process. By consistently recording key brew parameters and taste notes, baristas can achieve precision, improve training, and ensure quality across every shot.

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Coffee Basics Nerds

Written by : Coffee Basics Nerds

Expert coffee historians and brewing enthusiasts dedicated to sharing the rich heritage and techniques behind your perfect cup of coffee.

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