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Certified Cicerone practice questions

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Question 1Keeping and Serving Beer

Why should packaged beer be stored cold before service?

  1. It slows staling reactions Correct answer.
  2. It removes oxygen from the package
  3. It increases hop bitterness
  4. It raises carbonation levels

Explanation

Cold storage slows the oxidation and other chemical reactions that dull hop aroma and produce stale flavors. It does not remove oxygen or change the package's gas content, and it cannot restore freshness once lost.

Question 2Keeping and Serving Beer

At what temperature range is a typical American light lager best served?

  1. 55–60°F (13–16°C)
  2. 34–38°F (1–3°C)
  3. 38–45°F (3–7°C) Correct answer.
  4. 48–55°F (9–13°C)

Explanation

Light lagers are crisp, highly carbonated beers and are served cold, generally 38–45°F, to keep them refreshing. Serving them much warmer makes them foamy and dulls their snap.

Question 3Keeping and Serving Beer

Which observation shows that a glass has not been properly cleaned for beer service?

  1. The glass dries without water spots
  2. The beer looks bright and clear
  3. The foam stands up in a tight, lasting head
  4. Bubbles cling and the head collapses quickly Correct answer.

Explanation

Residues of grease, detergent, or rinse aid break surface tension, so CO2 bubbles cling to the glass wall and the head falls apart quickly. A properly cleaned glass supports a lasting head and leaves lacing as it empties.

Question 4Keeping and Serving Beer

Which keg coupler system is used on the majority of kegs from American craft breweries?

  1. A system
  2. D system Correct answer.
  3. G system
  4. S system

Explanation

The D system, also called the Sanke coupler, is the standard for most American breweries. Imported European beers may use A, G, or S couplers, so a bar serving imports needs the matching couplers.

Question 5Keeping and Serving Beer

What gas is typically used to dispense a nitro stout?

  1. Compressed air
  2. A nitrogen and CO2 blend Correct answer.
  3. Pure nitrogen
  4. Pure carbon dioxide

Explanation

Nitro beers are pushed with a blend of nitrogen and carbon dioxide, often about 75/25. The nitrogen provides the high pressure needed for the restrictor plate while keeping the beer from becoming over-carbonated.

Question 6Keeping and Serving Beer

When pouring a bottle-conditioned beer into a glass, what is the best technique?

  1. Pour down the side of a tilted glass Correct answer.
  2. Pour fast straight down the center
  3. Pour from a height to release aroma
  4. Shake the bottle to rouse the yeast

Explanation

Pouring down the side of a tilted glass keeps the yeast sediment in the bottle and controls foam. Straightening the glass near the end lets you build a modest head without clouding the beer.

Question 7Keeping and Serving Beer

How often should draft beer lines be cleaned at minimum?

  1. Every two days
  2. Once a year
  3. Every two weeks Correct answer.
  4. Once a month

Explanation

Draft lines should be cleaned at least every two weeks to remove yeast, bacteria, and beer stone that cause off-flavors and foam problems. High-volume accounts often clean more frequently.

Question 8Keeping and Serving Beer

What is the likely result of dispensing draft beer at pressure well below the balanced level?

  1. The beer becomes over-carbonated
  2. CO2 breaks out and the pour foams Correct answer.
  3. The beer pours flat with no head
  4. Nothing changes in the pour

Explanation

If applied pressure is too low for the beer's carbonation and temperature, CO2 comes out of solution in the line and at the faucet. The result is wild foam and beer that eventually tastes flat.

Question 9Keeping and Serving Beer

Which spile is used to vent a cask during settling?

  1. A rubber bung
  2. A stainless steel plug
  3. A hard, porous spile Correct answer.
  4. A soft, impermeable spile

Explanation

A hard spile is porous and allows excess CO2 and air to escape while the cask settles after being tapped. A soft spile swells and seals the cask once the beer is ready for service.

Question 10Keeping and Serving Beer

Which glass is classically used to serve a Belgian dubbel?

  1. A dimpled mug
  2. A shaker pint
  3. A pilsner flute
  4. A tulip glass Correct answer.

Explanation

A tulip glass has a wide bowl that releases aroma and a narrowing rim that concentrates it, which suits aromatic Belgian ales. The stem also keeps the drinker's hand from warming the beer.

Question 11Keeping and Serving Beer

What is the most common cause of poor head retention on a draft pour?

  1. Beer served too cold
  2. Too much CO2 pressure
  3. A brand-new faucet
  4. Grease on the glass Correct answer.

Explanation

Grease from lip balm, food, or detergent residue destroys the foam-positive proteins at the surface, so the head collapses. Proper washing and rinsing, not colder beer, is the fix.

Question 12Keeping and Serving Beer

At what temperature is most American draft beer typically stored and served?

  1. 45°F (7°C)
  2. 32°F (0°C)
  3. 38°F (3°C) Correct answer.
  4. 55°F (13°C)

Explanation

Most American draft systems are balanced for about 38°F, which keeps beer carbonated and refreshing without freezing it. Pressure settings are calculated to match this temperature.

Question 13Keeping and Serving Beer

Which packaging best protects beer from light-struck off-flavor?

  1. Green glass bottles
  2. Brown glass bottles Correct answer.
  3. PET bottles
  4. Clear glass bottles

Explanation

Brown glass blocks the most ultraviolet and blue light, which react with hop compounds to create the skunky thiol. Clear glass offers the least protection, and green glass only partially filters the damaging wavelengths.

Question 14Keeping and Serving Beer

Which practice helps ensure the freshest beer is served?

  1. Selling older stock first Correct answer.
  2. Keeping kegs at room temperature
  3. Storing new kegs at the front
  4. Serving kegs in the order tapped

Explanation

First-in, first-out rotation moves older beer out before newer deliveries, so nothing sits past its best. Kegs should be stored cold and dated so staff can rotate them correctly.

Question 15Keeping and Serving Beer

A newly delivered keg is warm. What should be done before tapping?

  1. Tap it immediately and raise pressure
  2. Roll it to mix the contents
  3. Vent it for an hour at room temperature
  4. Chill it to serving temperature Correct answer.

Explanation

A warm keg must be chilled to serving temperature before tapping, ideally for 24 hours, so CO2 stays dissolved. Tapping a warm keg causes breakout and foam, and raising pressure makes it worse.

Question 16Keeping and Serving Beer

What does a sparkler on a beer engine do?

  1. It adds nitrogen to the beer
  2. It restricts flow for a creamier head Correct answer.
  3. It filters yeast from the cask
  4. It cools the beer as it is poured

Explanation

A sparkler forces the beer through small holes, which knocks CO2 out of solution and produces a tight, creamy head. Styles served without a sparkler retain more condition and a lighter head.

Question 17Keeping and Serving Beer

A typical ale is carbonated to approximately how many volumes of CO2?

  1. 2.2–2.7 volumes Correct answer.
  2. 1.0–1.5 volumes
  3. 3.5–4.0 volumes
  4. 5.0–6.0 volumes

Explanation

Most ales are carbonated to about 2.2–2.7 volumes, and lagers often run slightly higher at 2.5–2.8. Volumes outside these ranges produce beer that tastes flat or sharply effervescent.

Question 18Keeping and Serving Beer

How long should a growler of draft beer be kept after filling?

  1. Indefinitely if refrigerated
  2. Up to 6 months if capped
  3. About 24–72 hours, kept cold Correct answer.
  4. Up to 30 days at room temperature

Explanation

A growler is not a sealed package with controlled oxygen, so the beer is best consumed within about 24–72 hours and kept cold. Flavor fades and oxidation begins once the container is opened or as oxygen enters.

Question 19Keeping and Serving Beer

How should bottled beer be stored before service?

  1. Lying down in a refrigerator
  2. On its side in a warm room
  3. Upright in direct sunlight
  4. Upright in a cool, dark place Correct answer.

Explanation

Storing bottles upright in a cool, dark place keeps yeast sediment settled and protects the beer from light and heat. Lying bottles down stirs sediment and exposes more beer to the cap.

Question 20Keeping and Serving Beer

At what temperature is cask ale traditionally served?

  1. 42–46°F (6–8°C)
  2. 38–42°F (3–6°C)
  3. 50–55°F (10–13°C) Correct answer.
  4. 46–50°F (8–10°C)

Explanation

Cask ale is served at cellar temperature, roughly 50–55°F, which lets its malt and hop character show without being chilled numb. Serving it at keg temperatures flattens its aroma and condition.

Question 21Keeping and Serving Beer

Why should draft beer generally not be served in a frozen glass?

  1. Ice crystals cause foaming Correct answer.
  2. It adds oxygen to the beer
  3. It makes the beer go flat
  4. It lightens the beer's color

Explanation

Frost and ice crystals provide nucleation sites that drive CO2 out of solution, producing excess foam. A frozen glass also numbs the beer's aroma and flavor, so it hides faults rather than improving the pour.

Question 22Keeping and Serving Beer

What is the purpose of a foam-on-beer (FOB) detector?

  1. It stops flow when the keg empties Correct answer.
  2. It blends nitrogen with CO2
  3. It measures CO2 volumes in the line
  4. It chills the beer line

Explanation

A FOB detector shuts off flow when a keg empties so that foam does not travel down the line to the faucet. This saves beer and keeps the next pour from being wild.

Question 23Keeping and Serving Beer

Why is a CO2 leak in a basement cellar dangerous?

  1. It is toxic in small amounts
  2. It corrodes the beer lines
  3. It is highly flammable
  4. It settles low and displaces oxygen Correct answer.

Explanation

CO2 is heavier than air and collects in low areas such as cellars, where it can displace oxygen and cause asphyxiation. Gas monitors and proper ventilation are required in enclosed cellars.

Question 24Keeping and Serving Beer

Which line inside diameter is typically used for short-draw direct draft systems to provide enough resistance?

  1. 3/8 inch
  2. 1/2 inch
  3. 5/16 inch
  4. 3/16 inch Correct answer.

Explanation

Short-run direct-draw systems commonly use 3/16-inch inside-diameter vinyl line, which provides enough friction per foot to balance typical pressure over a few feet. Larger-diameter lines offer little resistance and are used in long-draw trunk systems.

Question 25Keeping and Serving Beer

What head size is generally targeted when pouring a draft beer?

  1. Half the glass
  2. About three inches of foam
  3. About one inch of foam Correct answer.
  4. No foam at all

Explanation

A head of roughly one inch, or about a finger's width, releases aroma and protects the beer from oxygen. Far less foam leaves the beer flat-looking, while far more shortchanges the customer.

Question 26Keeping and Serving Beer

After washing a beer glass, what is the best way to dry it?

  1. Dry it with a hot-air hand dryer in the restroom.
  2. Dry it with a cloth towel shared among staff.
  3. Dry it with a paper towel from the dispenser.
  4. Air-dry it upside down on a clean rack. Correct answer.

Explanation

Air drying avoids lint, grease, and odors that can destroy foam and mask aroma. Shared towels and paper towels can leave residue, and hand dryers may blow dust or odors onto the glass.

Question 27Keeping and Serving Beer

Where should clean, empty beer glasses be stored before service?

  1. In the freezer so they are frosted.
  2. Beside the fryer for quick access.
  3. In a bucket of sanitizer.
  4. In a clean, odor-free cabinet. Correct answer.

Explanation

Glasses readily absorb odors, so they should be stored in a clean, odor-free cabinet. Freezing causes condensation and foam problems, while kitchen odors and sanitizer residue can taint the beer.

Question 28Keeping and Serving Beer

Which keg coupler system is standard for most American Sankey kegs?

  1. G coupler
  2. D coupler Correct answer.
  3. A coupler
  4. S coupler

Explanation

The D system, often called Sankey D, is the common coupler for American kegs. Other lettered couplers fit different keg valve designs used in other markets.

Question 29Keeping and Serving Beer

What is the volume of a standard UK firkin?

  1. 4.5 imperial gallons
  2. 9 imperial gallons Correct answer.
  3. 11 imperial gallons
  4. 18 imperial gallons

Explanation

A firkin holds 9 imperial gallons, about 41 liters. A pin is half that size at 4.5 gallons, and a kilderkin is 18 gallons.

Question 30Keeping and Serving Beer

Which gas blend is typically used to dispense nitrogen-conditioned stout through a restrictor-plate faucet?

  1. Pure carbon dioxide
  2. Pure oxygen
  3. About 75% carbon dioxide and 25% nitrogen
  4. About 75% nitrogen and 25% carbon dioxide Correct answer.

Explanation

Nitro dispense uses a mostly nitrogen blend with enough carbon dioxide to maintain the beer's carbonation. The restrictor plate then creates the creamy head and cascade.

Question 31Keeping and Serving Beer

Which glass shape is traditional for serving a German wheat beer (Weizen)?

  1. A narrow, tapered pilsner flute glass
  2. A tall, vase-shaped Weizen glass Correct answer.
  3. A short-stemmed Belgian tulip glass
  4. A thick glass dimpled mug with handle

Explanation

The tall, curved Weizen glass accommodates the large head and collects aroma from wheat beer. Flutes, tulips, and dimpled mugs are associated with other beer styles.

Question 32Keeping and Serving Beer

A glass comes back to the bar with visible lipstick and grease. What should the server do?

  1. Set it aside for rewashing; use a clean glass. Correct answer.
  2. Wipe it with a bar towel and then reuse it for the same customer.
  3. Rinse it with hot water and then pour the beer.
  4. Rinse it quickly with cold water and pour the beer.

Explanation

Lipstick and grease are foam-killing residues and are unsanitary, so the glass must be rewashed. Wiping or rinsing does not remove the oils adequately.

Question 33Keeping and Serving Beer

When pouring draft beer, where should the glass be held?

  1. Below the faucet, not touching the spout. Correct answer.
  2. Touching the faucet spout to steady it.
  3. Well above the faucet so the beer splashes.
  4. Tilted at 90 degrees directly under the spout.

Explanation

The glass should be held below the faucet without contacting the spout, which keeps the faucet sanitary and controls foam. Splashing or touching the spout causes excessive foam and contamination risk.

Question 34Keeping and Serving Beer

What is the likely result of dispensing draft beer at pressure well above the balanced level?

  1. Excessive foam and a fast, turbulent pour Correct answer.
  2. A steady pour with perfect head
  3. Beer that pours too slowly and appears undercarbonated
  4. Flat beer with no head

Explanation

Overpressure forces carbon dioxide out of solution and drives the beer through the line too quickly, producing foam and turbulence. Balanced pressure gives a controlled pour with proper carbonation.

Question 35Keeping and Serving Beer

Which solution is commonly used as the main cleaning chemical for draft beer lines?

  1. Dilute hydrochloric acid
  2. Vegetable oil
  3. Caustic soda solution Correct answer.
  4. Household bleach solution

Explanation

Alkaline caustic soda is commonly used to dissolve organic beer soil in draft lines. Acid washes are used periodically for mineral beer stone, but caustic is the main cleaning agent.

Question 36Keeping and Serving Beer

What does a cask breather do?

  1. Supplies low-pressure CO2 to blanket the beer. Correct answer.
  2. Cools the cask to cellar temperature.
  3. Adds high-pressure CO2 to carbonate the cask.
  4. Pumps air into the cask to push beer.

Explanation

A cask breather replaces the air that would enter as beer is drawn with low-pressure carbon dioxide, slowing oxidation without carbonating the beer. It does not cool or pressurize the cask like a draft system.

Question 37Keeping and Serving Beer

What is the function of the restrictor plate in a nitrogen stout faucet?

  1. It filters residual yeast out of the beer as it pours.
  2. It heats the beer so that aroma compounds are released.
  3. It forces beer through small holes to create a creamy head. Correct answer.
  4. It injects extra nitrogen gas into the beer at the faucet.

Explanation

The restrictor plate creates a pressure drop and turbulence as beer passes through tiny holes, producing the creamy head and cascade. The nitrogen already comes from the dispense gas blend.

Question 38Keeping and Serving Beer

Why does a nucleated beer glass have a small etched pattern on its bottom?

  1. It gives CO2 bubbles places to form. Correct answer.
  2. It reduces the glass's weight.
  3. It makes the glass easier to clean.
  4. It marks the brewery's logo for branding.

Explanation

Etched nucleation sites encourage dissolved carbon dioxide to form bubbles, helping maintain head and release aroma. The pattern is functional, not merely decorative.

Question 39Keeping and Serving Beer

What does 'beer clean' mean for a glass?

  1. The glass has been rinsed in sanitizer only.
  2. It is free of grease and detergent residue. Correct answer.
  3. The glass is frosted from the freezer.
  4. The glass has been washed in the same water as dishes.

Explanation

A beer-clean glass has no grease, detergent film, lint, or odors that would collapse foam or taint flavor. Sanitizer alone does not remove soil, and dishwater can deposit grease.

Question 40Keeping and Serving Beer

Why should a draft keg be kept cold before it is tapped?

  1. Cold raises the beer's pH and improves flavor.
  2. Cold keeps CO2 in solution and reduces foaming. Correct answer.
  3. Cold makes the heavy keg easier for staff to lift.
  4. Cold sterilizes the keg coupler before tapping.

Explanation

Carbon dioxide is more soluble at colder temperatures, so cold storage helps prevent breakout and foaming when the keg is tapped. Temperature does not sterilize the coupler or meaningfully change lifting.

Question 41Keeping and Serving Beer

What should be done to the keg coupler before tapping a new keg?

  1. Coat the coupler with petroleum jelly for a seal.
  2. Clean and sanitize it; check the gasket. Correct answer.
  3. Soak the coupler in a bucket of beer.
  4. Heat the coupler with hot water before use.

Explanation

The coupler should be cleaned and sanitized, and its gasket inspected, to prevent contamination and leaks. Petroleum jelly, beer, or heat can damage the seal or introduce contamination.

Question 42Keeping and Serving Beer

When serving a beer flight, why are lighter-bodied beers usually tasted before darker, stronger ones?

  1. So stronger beers do not overwhelm the palate. Correct answer.
  2. Because dark beers have more carbonation.
  3. Because light beers are always served in larger glasses.
  4. Because light beers are always colder.

Explanation

Tasting light to dark and low to high alcohol prevents stronger, roastier beers from fatiguing the palate and masking subtler flavors. Temperature, carbonation, and glass size are not the reason for the order.

Question 43Keeping and Serving Beer

What is the recommended final rinse for a beer glass right before pouring?

  1. No rinse at all.
  2. A rinse with hot water.
  3. Cold fresh water. Correct answer.
  4. A rinse with soapy water.

Explanation

A cold fresh-water rinse removes dust or sanitizer residue and cools the glass without adding soap. Soap residue kills foam, and skipping the rinse can leave contaminants.

Question 44Keeping and Serving Beer

As a keg of draft beer warms up, what happens to the dissolved CO2?

  1. It becomes less soluble and breaks out as foam. Correct answer.
  2. It is converted to alcohol.
  3. It becomes more soluble and remains dissolved in the beer.
  4. It turns into nitrogen.

Explanation

Gas solubility decreases as temperature rises, so CO2 comes out of solution and can cause foaming at the tap. Keeping the keg cold helps hold carbonation in solution.

Question 45Keeping and Serving Beer

How is cask ale traditionally carbonated?

  1. By secondary fermentation in the cask. Correct answer.
  2. By forcing air into the cask with a pump.
  3. By injecting nitrogen through a restrictor plate.
  4. By adding high-pressure CO2 at the tap.

Explanation

Cask ale undergoes a secondary fermentation in the cask that produces natural carbonation, with venting used to control pressure. It is not force-carbonated or served with air pumped into the cask.

Question 46Keeping and Serving Beer

In a beer keg, what is the spear?

  1. The tube that draws beer from the keg bottom. Correct answer.
  2. The plastic cap that protects the keg neck.
  3. The fitting that connects the gas line to the keg coupler.
  4. The valve that relieves excess pressure.

Explanation

The spear is the internal dip tube that carries beer from the bottom of the keg up through the valve when the coupler is engaged. It is not the external gas fitting, relief valve, or protective cap.

Question 47Keeping and Serving Beer

What is the purpose of a check valve in a draft beer gas manifold?

  1. To increase gas pressure to the keg.
  2. To chill the gas before it reaches the keg coupler.
  3. To stop beer flowing back into the gas lines. Correct answer.
  4. To filter particles from the gas.

Explanation

A check valve allows gas to flow toward the keg but prevents beer from backing up into the gas manifold and regulator. This protects the gas system from contamination and damage.

Question 48Keeping and Serving Beer

Approximately how much resistance does 3/16-inch inside-diameter vinyl beer line provide per foot?

  1. 0.1 psi per foot
  2. 10 psi per foot
  3. 3 psi per foot Correct answer.
  4. 0.5 psi per foot

Explanation

Small-diameter 3/16-inch vinyl line provides roughly 3 psi of resistance per foot, which is useful for balancing short-draw systems. Larger line sizes provide much less resistance per foot.

Question 49Keeping and Serving Beer

In a cask, what is the keystone?

  1. The tap used to pour the beer.
  2. The seal in the tap hole. Correct answer.
  3. The wooden plug driven into the vent hole.
  4. The metal hoop holding the cask staves.

Explanation

The keystone is the seal fitted into the tap hole, through which the tap is driven. The vent-hole plug is the shive, and the hoops hold the cask together.

Question 50Keeping and Serving Beer

In a cask, what is the shive?

  1. The stand that tilts the cask.
  2. The seal in the tap hole.
  3. The plug that seals the vent hole. Correct answer.
  4. The metal tap used for gravity dispense.

Explanation

The shive is the plug in the vent hole that seals the cask and can be pierced by a spile to control venting. The tap-hole seal is the keystone, and the stand is a stillage.