Plot: The pressure peaks in the Best Baker in America finale as host Carla Hall challenges the bakers to turn California's famous chiffon cake into the hottest cake sensation -- a tsunami cake -- featuring lemons and avocados, ingredients commonly associated with the Golden State. In the final bake-off, the competitors are baking to win as they each build a 2-foot-tall Hawaiian-themed dessert showpiece featuring lilikoi (passionfruit), haupia (coconut custard), malasada (Hawaiian doughnuts) and intricate chocolate work