Draft Beer Systems and Technology Flashcards
7 cards from real CFPS practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 7 Draft Beer Systems and Technology flashcards as text
What technology does a long-draw draft system use to maintain beer quality when the cooler is far from the bar?
Answer: Insulated trunk lines with circulating glycol coolant from a remote walk-in cooler
A long-draw system uses insulated trunk lines through which glycol coolant circulates, keeping beer at proper serving temperature as it travels from a remote cooler to distant taps.
What line material is recommended for modern draft beer systems over traditional vinyl tubing?
Answer: Polyethylene barrier tubing
Polyethylene barrier tubing is the modern standard because its barrier layer resists CO2 permeation and flavor absorption better than vinyl, maintaining beer quality especially in long-draw systems.
What is the function of a trunk line in a long-draw draft system?
Answer: To bundle and insulate beer lines and glycol lines running together from the cooler to the bar
A trunk line is an insulated bundle containing both the beer lines and glycol coolant lines, enabling multiple taps to be served from a remote cooler while maintaining proper temperature throughout.
Which of the following is a sign that draft beer is being dispensed at too low a temperature?
Answer: Beer appearing cloudy or icy in the glass
Beer served at or below 32°F can begin to freeze, appearing visually hazy or icy in the glass, and the extreme cold also suppresses flavor perception.
How many gallons does a standard US half-barrel keg hold?
Answer: 15.5 gallons
A standard US half-barrel keg holds 15.5 gallons, which yields approximately 165 twelve-ounce servings and is the most common commercial keg size.
Why is nitrogen used in blended-gas draft systems for standard (non-nitro) beers served through long draw lines?
Answer: Nitrogen provides additional pushing pressure without significantly raising carbonation because it is poorly soluble in beer
Nitrogen is blended into the gas mix to provide extra pushing pressure in long-draw systems because it is much less soluble in beer than CO2 and will not add unwanted carbonation.
According to proper draft service practices, what should be done with a newly delivered keg before tapping it for service?
Answer: Allow it to rest undisturbed at serving temperature for at least 24 hours before tapping
Kegs should rest undisturbed at serving temperature for at least 24 hours after delivery, allowing agitated beer to settle and reach temperature equilibrium to minimize initial foaming.