IHOPS, a limited-time Pumpkin Pancake Stout craft beer collaboration from IHOP and brewery Keegan Ales, is debuting this Saturday, September 29 at the 5th annual Bacon and Beer Classic in Flushing Meadows, NY. According to a press release, the beer is actually brewed with pancake batter mix. "The innovative flavor profile of IHOPS Pumpkin Pancake…