Ace the Cicerone Certified Beer Server Test 2025 – Brew Up Success in Style!

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What does oxidation in beer lead to?

Fruity and floral flavors

Stale or cardboard-like flavors

Oxidation in beer primarily leads to stale or cardboard-like flavors, which can significantly detract from the freshness and quality of the beer. As beer oxidizes, chemical reactions occur that break down various compounds, resulting in flavor compounds such as trans-2-nonenal, which gives off that characteristic cardboard or wet paper aroma and taste.

This change in flavor profile signifies that the beer has aged improperly or has been exposed to oxygen in a way that exceeds its stability. Most beers are formulated to be enjoyed fresh, and exposure to oxygen often harms their intended flavor characteristics. Fresh, well-preserved beer should maintain vibrant and balanced flavors, while oxidized beer can have a dull and unappetizing profile. Understanding this aspect of beer storage and handling is crucial for anyone involved in serving or assessing beer quality.

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Crisp and clean flavors

Spicy and herbal flavors

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