"The only Asian-inspired smashburgers in SF are found at Flats Burgers. The Excelsior pop-up operating out of Rocks Den daily has a lineup that includes a longanisa patty topped with banana aioli, and a Korean-inspired version with kimchi and beef smothered in sweet kalbi sauce. Everything is sandwiched between a plump, glossy bun that soaks up the meat juices like it’s thirsty. Tater tots and fries round out any order—and be sure to get some extra kimchi aioli for dipping." - julia chen 1, patrick wong