What's the difference between barley beer and other beers?

Generally speaking, the main raw material of beer is barley malt, supplemented by rice or corn starch, or wheat malt, barley and other grains. Barley beer should be produced by adding barley as auxiliary material. If the beer is produced by whole barley, the control of the production process will be more troublesome, because the enzyme system of barley itself is insufficient, and it can not be well dissolved and decomposed into sugars and protein substances that can be used by yeast. At present, barley is rarely used in breweries, and it is added in a small amount. In order to reduce the cost or increase the protein content, barley is cheaper than barley malt.

To sum up, there is little difference between barley beer and other beers, but the shelf life is slightly different at most.