Home Brew Log Book: Record Fermentation, Gravity, and Taste

Printable Home Brew Log: Brewday Checklist & Batch HistoryBrewing beer at home is part science, part art — and entirely easier to repeat when you write things down. A printable home brew log is one of the simplest tools that separates hobbyists from consistent brewers. It gives you a place to capture recipes, process steps, measurements, and tasting notes so you can reproduce successes and learn from mistakes. This article explains what to include in a printable home brew log, gives a ready-to-print layout you can use, and offers tips for making the log an effective part of your brewing routine.


Why use a printable home brew log?

Keeping detailed records helps you:

  • Repeat successful batches by tracking ingredients and exact process steps.
  • Troubleshoot problems by comparing batches and spotting patterns.
  • Improve recipes through incremental adjustments and notes on outcomes.
  • Track aging and conditioning so you know when a beer reaches its best flavor.
  • Share reliable recipes with other brewers or rebuild a favorite batch years later.

A printable format has extra benefits: it’s portable, easy to annotate during brew day, and doesn’t require electronics around hot kettles and sticky surfaces.


Essential sections for your brew log

A complete brew log covers the entire lifecycle of a batch, from recipe idea to final tasting. Include these sections on each batch sheet:

  • Batch identification

    • Brew date
    • Batch number
    • Recipe name and style
    • Brewer(s)
    • Target batch size (e.g., 5 gallons / 19 L)
  • Ingredients

    • Grain bill (malt type, weight)
    • Hops (variety, weight, AA%, addition time)
    • Yeast (strain, pitch rate, form — liquid vs. dry)
    • Adjuncts (spices, fruit, sugars)
    • Water profile and any adjustments (salts, pH)
  • Mash / Process details

    • Mash schedule (temperatures, times, infusion or step mash)
    • Sparge details (temperature, volume)
    • Pre-boil volume and gravity
    • Boil time and additions timeline
  • Measurements

    • Original gravity (OG) and how measured (hydrometer/refractometer)
    • Final gravity (FG) and date measured
    • Calculated ABV and attenuation
    • Mash pH, kettle pH, fermentation temperatures
    • Carbonation method and volumes (priming sugar amount or keg PSI)
  • Fermentation log

    • Start date and activity notes (e.g., vigorous krausen on day 2)
    • Temperature schedule (set and actual)
    • Racking/transfers (dates, volumes)
    • Dry-hop or secondary additions (dates and amounts)
  • Packaging

    • Date packaged (bottled/kegged)
    • Number of bottles and fill volume
    • Priming sugar type and weight
    • Kegging pressures and fill method
  • Aging & Serving

    • Conditioning time and temperature
    • Cellar notes and best-by suggestions
    • Serving temperature and glassware
  • Tasting notes

    • Appearance, aroma, flavor, mouthfeel, overall impression
    • Flaws detected (oxidation, off-flavors, infection)
    • Score (optional) and recipe changes for next time
  • Miscellaneous

    • Cost per batch (optional)
    • Equipment used and any changes
    • Links or references to original recipe sources

Printable layout (ready to use)

Below is a sample single-page layout you can paste into a document editor, adjust to your page size, and print. Duplicate the page per batch or bind into a notebook.

Batch #: ___________________ Brew Date: ______________ Recipe Name: ______________________ Style: ______________________ Brewer: ________________ Target Volume: _______________

Ingredients

  • Malts / Adjuncts:
    • 1) ______________________ Amount: _______
    • 2) ______________________ Amount: _______
    • 3) ______________________ Amount: _______
  • Hops (variety — amount — time):
    • 1) ______________________ — _______ g/oz — _______ min
    • 2) ______________________ — _______ g/oz — _______ min
  • Yeast: ______________________ Pitch Rate/Notes: ___________________
  • Water adjustments: __________________________

Mash & Process

  • Mash temp(s) / time(s): ______________________
  • Sparge temp / volume: ______________________
  • Pre-boil vol: _______ L / _______ gal Pre-boil gravity: _______
  • Boil time: _______ min Hop additions timeline: __________________

Measurements

  • OG: _______ Method: _______ Temp: _______
  • FG: _______ Method: _______ Temp: _______
  • Calculated ABV: _______ Apparent attenuation: _______%
  • Mash pH: _______ Fermentation temps: __________________

Fermentation Log

  • Started: _______ Day 1 activity: ___________________
  • Peak krausen: _______ Activity notes: ___________________
  • Racked/transferred (date & volume): ___________________
  • Dry hop / secondary additions: ___________________

Packaging

  • Packaged (bottled/kegged): _______ Date: _______
  • Number bottles / keg size: _______ Priming sugar: _______
  • Carbonation target: _______ vols or _______ PSI

Aging & Serving

  • Conditioned until: _______ Temp: _______
  • Recommended serving temp: _______ Glassware: _______

Tasting Notes (appearance, aroma, flavor, mouthfeel)

  • Date tasted: _______ Score: _______/100
  • Notes: _____________________________________________________________
  • Changes for next time: _______________________________________________

Other notes / cost / equipment changes:



Tips for using the log effectively

  • Fill it in during brew day. Writing measurements and observations in real time avoids guesswork later.
  • Use a pencil or pen that won’t smear around sticky wort. Consider a clipboard.
  • Keep a master recipe index so you can quickly find previous batches and compare variations.
  • Photograph hydrometer/refractometer readings and stick the photo on the page for proof of numbers.
  • Use consistent units (metric or imperial) throughout the log.
  • Date every note — even small timing differences can matter.

Variations and templates

  • Single-page batch sheet (as above) for each brew.
  • Multi-batch comparison sheet to track iterations of the same recipe.
  • Fermentation-only log for large or long-aging beers.
  • Bottling/kegging checklist sheet to standardize packaging steps.

Sample filled entry (short)

Batch #: 12 Brew Date: 2025-06-15 Recipe: Summer IPA Style: American IPA Brewer: Alex Target Volume: 19 L (5 gal)

Ingredients

  • Pale malt 4.5 kg; Crystal 200 g; Citra 50 g (dry hop)
  • Hops: Columbus 20 g (60), Cascade 15 g (10), Citra 30 g (whirlpool), Citra 50 g (dry hop)
  • Yeast: Wyeast 1056 (liquid) pitch 2 L starter

Measurements

  • OG 1.060 (hydrometer) Temp 20°C
  • FG 1.012 Temp 20°C
  • ABV ≈ 6.2%

Fermentation: vigorous 48–72 hrs; dry hop day 5 for 4 days. Packaged: Kegged 2025-06-28, 2.5 vols CO2 Tasting: bright citrus aroma, balanced bitterness, clean finish. Change: increase late hop by 10 g next time.


Final thoughts

A printable home brew log is a low-tech but powerful tool. It turns guesswork into repeatable results, helps you learn faster, and creates a personal archive of your brewing journey. Start simple, keep it consistent, and let your logs evolve with your brewing style.

If you want, I can convert the single-page layout above into a downloadable PDF or printable A4/Letter template.

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