Cicerone Certified Beer Server Practice Exam

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Prepare for the Cicerone Certified Beer Server Exam with engaging quizzes featuring flashcards and multiple-choice questions that reinforce essential beer knowledge. Get ready to validate your expertise in beer service and enhance your career!

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What effect does oxygen have on the flavor stability of beer?

It enhances the flavor until it is consumed.
It causes immediate bitterness.
It can reduce flavor stability to 24 hours or less.
It has no effect on flavor stability.

The correct answer is: It can reduce flavor stability to 24 hours or less.

Oxygen has a significant impact on the flavor stability of beer, primarily causing deterioration in its taste over time. When oxygen is introduced to beer, it can lead to a process known as oxidation, which alters the flavor profile, often resulting in off-flavors that may be described as papery, cardboard-like, or sherry-like. This degradation can occur quite rapidly, with flavor stability being compromised within as little as 24 hours after exposure. Understanding this effect is crucial for brewers and beer servers alike, as it highlights the importance of minimizing oxygen exposure during the brewing process, packaging, and serving. This focus on oxygen management helps maintain the intended flavor characteristics of the beer for as long as possible.