The main raw materials of beer are barley, water and hops, and the auxiliary raw materials are rice, starch and yeast. The key to brewing beer is to choose malt, water, hops and yeast for fermentation as raw materials and use brewing technology to give full play to their respective advantages. Barley grains are cultivated into qualified malt, which is dried, crushed, poured and drenched to get wort, which is the original beer without fermentation. Malt is the source of beer aroma and affects the color of beer. Most of the malt of Suntory beer is imported from Europe and North America, with a strong aroma and light yellow brown color, so the brewed wine is also light gold. Most components of beer are water, so the quality of brewing is particularly important, which not only has a great influence on the quality of beer, but also plays a decisive role in the taste of beer. Suntory only uses high-quality pure natural mineral water confirmed by the Ministry of Geology and Minerals, which is colorless, odorless, transparent, free of chemicals and microorganisms and high in purity. The brewed wine is particularly crisp and refreshing. The function of hops is to produce slight bitterness and fragrance and form better beer foam. Generally speaking, Demei hops are more valuable. For example, Suntory uses all hops from Germany.