MINNEAPOLIS--(BUSINESS WIRE)--When the calendar page turns to September, there are a few things to count on. Fall is in the air, football season is kicking off and the Dairy Queen® system, a Berkshire Hathaway (NYSE: BRK.A and BRK.B) company, is serving up the quintessential season-inspired treat. Beginning August 31, the Dairy Queen system will bring back a Fan favorite, the Pumpkin Pie Blizzard® Treat, so popular it will be featured as the Blizzard of the Month flavor for two consecutive mont


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