Which of the following is NOT a recommended practice for beer flavor evaluation?

Improper glassware usage is a practice that is not recommended for beer flavor evaluation. The choice of glassware can significantly influence the perception of a beer's aroma, flavor, and overall experience. Using the wrong type of glass can mask certain characteristics of the beer or fail to enhance its positive attributes, leading to a less accurate evaluation.

For instance, a wide-mouthed glass can amplify aroma while a narrow glass may concentrate it, impacting how flavors are perceived. Therefore, improper glassware can hinder the ability to assess all the nuances of the beer, making it essential to use appropriate glassware that complements the beer style being evaluated.

In contrast, observing beer color, smelling before tasting, and checking for foam retention are all vital aspects of evaluating beer. These practices help assess the visual appeal, aromatic compounds, and carbonation characteristics, respectively, which are critical components of a beer's overall profile.