Super Duper Burger

721 Market St, San Francisco CA

(415) 538-3437

Rated 5.0 out of 5 from 1 Reviews Super Duper Burger is Ranked #1 of 14 Restaurants in Union Square San Francisco. Some say it is top.

★★★★★ on the 7th of August, 2013

This joint contains single and double chrome-flat-top-grilled burgers that've drawn them well-deserved comparisons to In-N-Out.
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