Grubstake Diner is an American diner that has stood the test of time. We are an SF original serving up burgers, steaks and shakes all night long. We were featured on the Food Network. Guy Fierri LOVES Grubstake and you can see us on Diners Drive-Ins & Dives. One of the MOST UNIQUE diners that you’ll come across IN CALI. -Guy Fieri. We’re proud to serve the historic San Francisco Polk Gulch neighborhood & we look forward to serving you!