Lagers have a reputation for being tricky to brew, but they don’t have to be intimidating. Sure, they take a little more patience than most ales, but the payoff is worth it - a crisp, clean beer that’s incredibly satisfying to pour from your own tap or bottle.
The thing about lagers is that they’re all about the details. Since the flavour is usually lighter and smoother, there’s nowhere for mistakes to hide. A small temperature swing, rushed fermentation, or unhealthy yeast can make a bigger difference than you’d expect. The good news? A few simple habits can instantly improve your results.
In this post, we’re going through practical lager brewing tips that actually matter - from fermentation temps and yeast health to getting that clean, refreshing finish every good lager should have. Whether you’re brewing your first pilsner or trying to level up your usual recipe, these tips will help you make better lager without making brewing feel complicated.
Pitch plenty of yeast
Lagers need more yeast than ales (roughly twice the cells) for a clean fermentation. Use liquid starters or multiple packs of dry yeast. Underpitching can lead to off-flavours and sluggish fermentation, and is the most common issue we come across when advising on lager brewing.
Temperature Control
Ferment cold (10-13°C) and keep the temperature consistent. Don't skip the Diacetyl Rest near the end of fermentation, and raise the temperature by a few degrees for a day or two. This helps clean up buttery and other off-flavours.
Clarity is Key
Most lager styles finish clear, and in competitions judges will look for high clarity. Use fining agents like gelatin or isinglass and ensure a long, cold lagering period (often 3-12 weeks).
Oxygen Control
Before fermentation starts, make sure your wort is well oxygenated. Healthy yeast means cleaner fermentation and better results overall.
After fermentation, oxygen is the enemy of lagers, or just about any beer for that matter, especially when bottling or kegging. Minimise oxidation to prevent cardboard off-flavours by using high fills, capping on foam, purging bottles with CO2, or doing closed transfers to keg.
Use Proper Lager Yeast Strains
Select yeast strains suitable for the style. Details matter with lagers, so selecting the right strain rather than a generic one will help.
Patience & Lagering
After fermentation is complete, lower the temperature to near freezing 1-2°C and "lager" (store) for a few weeks to improve clarity and smooth out the flavours. Great lagers aren't rushed.
Boil
Make sure the boil is uncovered to reduce Dimethyl Sulfide (DMS), which causes a cooked corn or cabbage flavour. A vigourous, uncovered boil will drive off volatile DMS, and make sure to cool it rapidly at the completion.
Focus on Cleanliness
Because lagers are subtle, even small contamination issues can stand out. Good sanitation is one of the easiest ways to improve your beer.
Keep Your Recipe Simple
Lagers shine when they're balanced and clean. A simple grain bill and restrained hop additions often produce the best results.
Lager brewing might take a little more patience, but that’s part of what makes it rewarding. With good temperature control, healthy yeast, and a bit of extra time, you can brew clean, crisp beers that rival your favorite commercial lagers. Keep experimenting, take notes along the way, and most importantly - enjoy the process and the beer that comes with it.