Pectic enzyme (pectinase) is an essential addition for fruit wines and certain country wines — without it, the pectin in fruit produces a persistent haze in the finished wine that no amount of fining or filtering will fully clear.
John Brewster
John Brewster
John Brewster is the homebrewer and writer behind BrewMyBeer — over a decade of all-grain brewing, 80+ BIAB batches, and 1,000+ guides on fermentation science, water chemistry, hops, yeast, and homebrewing equipment. Every guide is written from genuine hands-on experience.
- Equipment & Tools
The Best pH Meters for Fermentation: Essential Tools for Brewing Success
by John Brewster 3 minutes readA reliable pH meter is one of the highest-value equipment purchases a homebrewer can make after the basics.
- Troubleshooting
How to Clean Reused Bottles Safely: Guide for Homebrewers
by John Brewster 4 minutes readReusing bottles is one of the economical pillars of homebrewing — a set of commercial beer bottles properly cleaned and sanitized will serve hundreds of batches over years. The key word is properly.
Yeast nutrients are one of the most under-discussed variables in home fermentation — mead and wine makers especially benefit from proper nutrient additions, since honey and fruit juice lack the amino acids, vitamins, and minerals that yeast need for
- Brewer’s Toolbox
The Art of Beer Aging: When to Cellar and When to Drink Fresh
by John Brewster 3 minutes readOne of the most important skills a homebrewer develops is knowing which beers to drink young and which to set aside for months or years. Not every beer improves with age — many actively decline past their peak.
- Brewer’s Toolbox
Bottle Conditioning Beer: Guide to Natural Carbonation
by John Brewster 6 minutes readBottle conditioning is the process of adding a measured amount of fermentable sugar to fully fermented beer before sealing bottles, allowing the remaining yeast to produce CO₂ that dissolves into the beer over 1–3 weeks.
- Brewer’s Toolbox
Yeast Attenuation in Brewing: Understanding How Yeast Shapes Your Beer
by John Brewster 5 minutes readYeast attenuation is the percentage of wort sugars your yeast actually consumes during fermentation. It determines whether your beer finishes dry and crisp or full-bodied and sweet — and it’s just as important as your grain bill.
- Brewer’s Toolbox
Mastering Mash Temperature: How Small Changes Create Dramatically Different Beers
by John Brewster 6 minutes readMash temperature is the single most powerful variable you control after you’ve locked in your grain bill. In my experience, a 5°F shift — with nothing else changed — produces beers that taste like entirely different recipes.
- Brewer’s Toolbox
Understanding Grain Color: A Comprehensive Guide to Lovibond Ratings in Brewing
by John Brewster 3 minutes readLovibond (°L) is the scale used to measure the color of malted grain and other brewing ingredients. Every grain on your homebrew shop shelf has a Lovibond rating that tells you how much color it contributes to your beer — …
- Brewer’s Toolbox
The Brewer’s Guide to Water Profiles: Matching Water Chemistry to Beer Styles
by John Brewster 2 minutes readDifferent beer styles developed in different geographic regions partly because of the local water — the mineral content of Burton-on-Trent made bold hop-forward ales, Munich’s soft water produced smooth malt-forward lagers, and Dublin’s high-bicarbon