24 Jul 2017 --- Umami Burger introduces the Impossible Burger to its Northern California locations in partnership with Impossible Foods on Friday, July 21, becoming the first better burger restaurant group to feature the famous plant-based burger in the Bay Area. Successfully debuting at nine of Umami Burger's Los Angeles stores in Spring 2017, the popular Impossible Burger will expand to restaurants in Soma, Marina, Oakland and Palo Alto.