![Shake Shack to open doors at San Mateo's Hillsdale Shopping Center this weekend | Peninsula Foodist | Elena Kadvany | Palo Alto Online Shake Shack to open doors at San Mateo's Hillsdale Shopping Center this weekend | Peninsula Foodist | Elena Kadvany | Palo Alto Online](https://www.paloaltoonline.com/blogs/photos/12/3525.jpg)
Shake Shack to open doors at San Mateo's Hillsdale Shopping Center this weekend | Peninsula Foodist | Elena Kadvany | Palo Alto Online
SHAKE SHACK on X: "Love ya, Pops. This Sun 6/19 treat Dad to Shack & we'll hook him up w/ free frozen custard: https://t.co/HbOxFWAvaO https://t.co/TO4Oxa3oQo" / X
![Burgers, fries and frozen custard! - Picture of Shake Shack Theater District, New York City - Tripadvisor Burgers, fries and frozen custard! - Picture of Shake Shack Theater District, New York City - Tripadvisor](https://media-cdn.tripadvisor.com/media/photo-s/04/07/cf/df/shake-shack.jpg)