Los Angeles — FAT (Fresh. Authentic. Tasty.) Brands Inc. has opened its first tri-branded location: a Fatburger, Buffalo’s Express and Hot Dog on a Stick. This unique new location is situated in the Los Angeles neighborhood of Valley Village. “Since 2013, we have been able to effectively scale the co-branded model of Fatburger and Buffalo’s Express,” says Mason Wiederhorn, chief brand officer of FAT Brands. “As FAT Brands has continued to expand its portfolio, we have been exploring other like-minded brands to join together, most recently, Johnny Rockets and Hurricane …