Which of the following constitutes the majority of beer by weight?

Water constitutes the majority of beer by weight, typically making up about 90-95% of the overall composition. Its significant presence is crucial not only for the brewing process but also for the final flavor and mouthfeel of the beer. Since water itself comes in various mineral compositions, it can influence the taste of the beer significantly, depending on its source.

On the other hand, while alcohol is an important component of beer, it generally comprises around 4-8% by weight, depending on the style. Yeast is responsible for fermentation and contributes only a small fraction to the overall weight of the beer—usually less than 1%. Hops, which are used primarily for flavor and bitterness, make up an even smaller portion by weight, often used in small quantities relative to the volume of beer produced. Thus, water’s overwhelming percentage in beer reinforces its status as the dominant component.