Disclosed is a method for preventing a so-called "gushing" phenomenon of a fermented malt beverage such as beer, that is, simultaneous overfoaming of the beverage when opening bottled or canned beer or the like. Specifically disclosed is a method for producing a fermented malt beverage, wherein the method uses cereal treated with thiophanate-methyl or wheat treated with prothioconazole. It is preferable that the cereal treated with thiophanate-methyl is cereal which has been treated with thiophanate-methyl after flower formation stage and before harvesting, and preferred type of the cereal is barley.
