The Grubstake Diner
1525 Pine Street
San Francisco, CA 94109-4611
(415) 673-8268 http://www.sfgrubstake.com/
The Grubstake surpasses all other San Francisco diners and Polk Street restaurants with its hardy American and Portuguese food. The Grubstake continues the tradition of serving cooked-to-order burgers and breakfastsâas well as full meals and house-made dessertsâfrom 5:00 p.m. to 4:00 a.m. daily.