Study Guide
Exam Focus
- Never refill a used glass without cleaning it.
- Know the three-sink method.
- Know dedicated glass washer concerns.
- Use sheeting, salt, foam, bubbles, and lace as cleanliness checks.
What beer-clean means
A beer-clean glass has no lipstick, grease, food film, dairy residue, detergent film, or sanitizer aroma. Use a freshly cleaned glass for each beer rather than refilling a used glass.
How servers check
Visible soil, bubbles clinging to the side, poor foam, or uneven lacing can signal a glass problem. Clean glasses should air-dry because towels can add lint, odor, or new contamination.
Other Certification Notes
Certified Cicerone® Open the Certified Cicerone® topic page
Exam Focus
- Define beer-clean glassware and contamination indicators.
- Use sheeting, salt, bubbles, foam, and lacing checks.
- Explain why used glasses must not be refilled.
What the control point does
Use Beer-clean Glassware connects beer quality to a specific service action. The professional task is to protect the beer's intended carbonation, aroma, flavor, appearance, and package or draft integrity while avoiding unsupported claims. For storage and package topics, that means checking age, temperature, light, oxygen, and container condition. For draft topics, it means keeping gas, beer, cooling, and cleaning variables in balance.
Decision workflow
| Observation | Likely cause or risk | Cicerone®-level decision | | --- | --- | --- | | Warm beer, foamy pour, or dull flavor | Temperature abuse, draft imbalance, or age | Verify temperature and freshness before changing other variables | | Dirty glass, faucet contact, or stale aroma | Contamination or poor service practice | Stop the pour, replace the glass or beer, and correct the process | | Damaged package, leaking keg, or uncertain line status | Safety, oxidation, or microbial risk | Hold the beer and escalate before selling it | | Guest needs explanation | Service decision affects experience | Explain the quality reason in plain language |
Failure modes and escalation
The common failure is treating a symptom as a single-cause problem. Foam can come from warm beer, dirty glassware, incorrect pressure, blocked vents, line restriction, or a damaged keg seal; stale flavor can come from age, heat, oxygen, light, or dirty dispense. The applied answer is to inspect visible conditions first, keep beer out of service when quality or safety is uncertain, and reserve pressure, gas-blend, line, or chemical decisions for trained staff.
Worked application
A glass with grease or detergent residue can show bubbles clinging to the side, weak foam, poor lacing, or patchy sheeting. The correct decision is to replace the glass, not blame the beer. Beer-clean tests are useful because contamination can flatten aroma presentation and make an otherwise sound beer look badly poured.
Why It Matters
- Clean glassware protects foam, aroma, appearance, and guest confidence.
- Glass problems are often visible before the guest receives the beer.
Practical Sensory Exercises
Beer-clean inspection drill
Inspect three clean-looking glasses under light, look for spots, film, odor, or residue, and decide whether each should be used, rewashed, or removed from service.
Key Terms
- Beer-clean glass
- A glass free of soil, grease, foam-negative residue, and sanitizer aroma.
- Foam-negative residue
- Grease, oil, detergent, or food residue that collapses beer foam.
- Air drying
- Drying clean glassware without towels that can transfer lint or odor.