Budweiser is produced using barley malt, rice, water, hops, and yeast. Malt gives color and the sugar that is needed for the beer to ferment. Yeast is key in the flavor. The hops give the beer spice, aroma, and bitterness. Another ingredient is rice, helping Budweiser achieve crispness in its flavor. Finally, there is the water, which is filtered to make sure it's pure.