A 12-ounce beer has the same alcohol content as a _____ glass of wine.

A 12-ounce beer typically has the same alcohol content as a 5-ounce glass of wine. This is because a 12-ounce beer contains approximately the same amount of alcohol as a 5-ounce glass of wine. It's important for bartenders to understand these alcohol equivalencies to ensure they are serving alcohol responsibly and in appropriate quantities.