What historical condition led Japanese brewers to substitute barley malt with rice?
Answer
Grain shortages and import costs after WWII
Historically, grain shortages and high import costs following World War II prompted brewers to substitute barley malt with rice, turning a necessity into a stylistic signature.

Related Questions
What fundamental category does Sapporo alcohol fall squarely into?In which historical era was Sapporo Breweries established in Japan?What type of yeast is characteristic of lagers like Sapporo Premium Beer?What common adjunct is used alongside barley malt in brewing Sapporo Premium Beer?What is the typical Alcohol By Volume (ABV) for standard Sapporo Premium Beer?Who founded Sapporo Breweries, bringing back technical knowledge from abroad?Which taste note is generally NOT a primary descriptor for Sapporo Premium Beer's profile?What historical condition led Japanese brewers to substitute barley malt with rice?Why is Sapporo Premium considered an effective pairing for spicy Asian cuisine?Which Sapporo offering is often brewed as a German-style dark beer (Dunkel) or a Pilsner?What quality does the 5.0% ABV level typically indicate regarding Sapporo Premium Beer's design?