How to use a brew log (what to write down, what to ignore)

A brew log is just a short record that helps you repeat the good cups and stop guessing.

It should be fast. If it feels like homework, you will not do it.

What to write down (the useful minimum)

For espresso

• Dose in (g)

• Yield out (g)

• Time (s)

• Grind setting (a simple reference, even if it is “one click finer”)

• Taste note (one word is enough, even ‘Yum’ or ‘Less yum’)

For filter and immersion

• Dose (g)

• Water (g)

• Brew time (total time, or steep time)

• Grind setting reference

• Taste note

What to ignore

• Long tasting descriptions

• Ten different variables changing at once

• Trying to record every pour detail unless you are troubleshooting V60 specifically

How to use the log to improve

1. Brew a baseline and write it down.

2. Label the flavour problem.

3. Change one thing and record the change.

4. Keep the improved version as your new baseline.

FAQs

Do I need an app?
No. Notes app, a scrap of paper works or even write it on the bag!. The goal is consistency, not data.

What is the most important number for espresso?
Yield. Dose and yield give you the ratio, which strongly affects strength and extraction.

What if I do not know my grinder setting?
Write relative changes. “Two clicks finer” is still useful.