Your Beer Shouldn't Be Half Foam
Your bartender pours a pint.
It looks perfect for a second—then the foam rises.
Another pour.
Same problem.
Before long, your staff are spending extra time pouring beer, customers are waiting longer, and perfectly good product is going down the drain.
If this sounds familiar, don't automatically blame the beer.
A foamy pint can be a sign that something isn't working properly within your draft beer system, keg system, cooling system, gas system, beer lines, or serving equipment.
And after a busy summer season, August is an excellent time for bar and restaurant owners to take a closer look.
Let's look at seven common causes of foamy draft beer.
1. Your Beer May Be Too Warm
Temperature is one of the first things to investigate when draft beer suddenly becomes difficult to pour.
During the summer, your draft system can experience additional heat from:
- Warm ambient temperatures
- Frequent cooler-door openings
- High customer volume
- Increased keg turnover
- Equipment working harder
- Poor air circulation
- Problems with glycol cooling systems
If the keg is not being maintained at the appropriate temperature for the beer and system, excessive foam can become a recurring problem.
What should you check?
Start with the temperature of the keg cooler and look for unusual temperature fluctuations.
For systems using glycol cooling, the glycol system should also be operating properly and maintaining consistent cooling throughout the draft system.
Remember: A cold keg alone doesn't guarantee a properly chilled pour. The beer needs to remain properly cooled as it travels through the draft system.
2. Your CO₂ or Beer Gas Pressure May Be Incorrect
Your draft system needs the right gas pressure to deliver beer properly.
Too much pressure can contribute to excessive carbonation and pouring problems.
Too little pressure can create other problems, including inconsistent pours and carbonation issues.
Your system may also use a beer-gas blend depending on the beer, system design, and application.
Don't simply turn the regulator up.
If your beer is pouring slowly or foamy, increasing pressure without identifying the actual problem can sometimes make things worse.
A proper draft system assessment should consider:
- Beer temperature
- Gas pressure
- Beer type
- Line length
- Line restriction
- System design
- Keg condition
This is one reason professional CO₂ calibration and draft system troubleshooting can be valuable for commercial operations.
3. Your Beer Lines May Need Professional Cleaning
Your beer lines carry the product from the keg to the customer's glass.
Over time, beer residue and mineral deposits can build up inside the system.
One common concern is beer stone, which can affect beer quality and system performance when it accumulates.
A dirty draft line can contribute to:
- Off-flavours
- Poor beer quality
- Inconsistent pours
- Excessive foam
- Customer complaints
Regular professional beer line cleaning isn't simply about making the equipment look clean.
It is about protecting the quality of the beer being served.
Ask yourself:
When was the last time your commercial beer lines were professionally cleaned?
If you can't remember, your draft system may be overdue.
4. Your Faucet May Be Dirty or Not Operating Properly
Your faucet is the final point between your draft system and the customer's glass.
That makes it an important part of the overall system.
A faucet can develop problems from:
- Beer residue
- Improper cleaning
- Worn components
- Sticky operation
- Improper pouring technique
Your staff should also be trained to open the faucet fully when pouring rather than partially opening it.
A partially opened faucet can disrupt the flow and contribute to poor pouring performance.
5. Your Keg Coupler Could Be the Problem
The keg coupler connects the draft system to the keg.
If the coupler, seal, connection, or fitting isn't functioning correctly, the system may not perform as expected.
Check for:
- Leaking connections
- Damaged seals
- Dirty couplers
- Loose connections
- Worn components
- Improper engagement
A draft beer system is a connected system.
A small issue at the keg can eventually become a problem at the faucet.
6. You May Have a Beer Gas Leak
Gas problems can be frustrating because the keg may appear fine while the system isn't maintaining the pressure it needs.
Potential warning signs include:
- Regulator pressure dropping
- Gas cylinders emptying faster than expected
- Inconsistent pours
- Difficulty maintaining pressure
- Hissing sounds around connections
- Visible damage to gas tubing or fittings
If you suspect a gas leak, don't ignore it.
Gas systems should be inspected and serviced safely by someone familiar with commercial draft equipment
7. Your Draft System May Not Be Properly Balanced
This is one of the most important concepts for any restaurant or bar owner to understand:
A draft beer system is more than a keg and a faucet.
Your system can include:
Keg → Coupler → Beer Gas/CO₂ → Regulator → Beer Line → Cooling → Shank → Faucet → Glass
Every component needs to work together.
If one part of the system isn't performing properly, the customer may notice it in the glass.
This is why repeatedly adjusting one component without understanding the entire system may not solve the underlying problem.
🍺 Quick Draft Beer Troubleshooting Guide
| What You're Experiencing | What to Check |
|---|---|
| Excessive foam | Temperature, pressure, lines, faucet |
| Slow pour | Pressure, faucet, line restriction |
| Flat beer | Carbonation and gas system |
| Warm beer | Keg cooler or glycol system |
| Off-flavour | Beer line cleanliness |
| Inconsistent pours | System balance and equipment |
| Gas pressure problems | Regulator, connections and gas supply |
This checklist can help identify possible causes, but persistent draft problems may require a professional inspection of the system.
That's why solving a draft beer problem starts with identifying the cause, rather than simply treating the symptom.
🍻 Ready for an August Draft System Check?
If you're experiencing excessive foam, inconsistent pours, off-flavours, temperature problems, gas issues, or recurring keg-system problems, Northern Draft Bar Services Inc. can help identify what's happening.
We provide professional draft beer services for bars, restaurants, pubs, hotels, lounges, and other beverage-service businesses across Saskatchewan.
Our services include:
- Professional beer line cleaning
- Draft beer system maintenance
- Draft system installation
- Keg system services
- Beer gas services
- CO₂ calibration
- Glycol system services
- Draft equipment and supplies
- Repairs and troubleshooting
We don't just look at the beer line. We look at the draft system as a complete system.
Don't wait for the next customer complaint.
If your draft beer isn't pouring the way it should, let's find out why.
Northern Draft Bar Services Inc.
Professional Draft Beer System Services
Saskatchewan
Phone: 306-262-0554
Website: https://northerndraftbarservices.com/
READ MORE:
Is Your Keg System Ready for the End of Summer?
Your draft system has been working hard all summer. Before heading into the final stretch of patio season, use our August Draft Beer Maintenance Checklist to check your beer lines, keg cooler, CO₂/beer gas, faucets, couplers, glycol system, draft towers and more.
https://northerndraftbarservices.com/blogs/draft-beer-maintenance