Mason Diner (Cafe Mason)

Mason Diner (Cafe Mason)

320 Mason St, San Francisco, CA 94102

(415) 544-0320
4.4 (2,954 reviews)
Closed Now
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Opening Hours

Friday Today Closed
6 AM–2:30 PM
Saturday
6 AM–2:30 PM
Sunday
6 AM–2:30 PM
Monday
6 AM–2:30 PM
Tuesday
6 AM–2:30 PM
Wednesday
6 AM–2:30 PM
Thursday
6 AM–2:30 PM

Customer Reviews & Ratings

4.4
Based on 2,954 customer ratings & reviews
5 Stars
68%
4 Stars
22%
3 Stars
6%
2 Stars
2%
1 Star
2%

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Weekly Hours

  • Friday Today Closed 6 AM–2:30 PM
  • Saturday 6 AM–2:30 PM
  • Sunday 6 AM–2:30 PM
  • Monday 6 AM–2:30 PM
  • Tuesday 6 AM–2:30 PM
  • Wednesday 6 AM–2:30 PM
  • Thursday 6 AM–2:30 PM

Frequently Asked Questions

What time does Mason Diner open in the morning?

Mason Diner opens bright and early every day at 6:00 AM, making it a perfect spot for early risers and travelers in the Union Square area.

What are the top-recommended signature breakfast dishes?

Guests frequently rave about the homemade corned beef hash, the Billion Dollar Bacon (thick-cut candied bacon with brown sugar and spices), and the eggs benedict paired with fresh shrimp and crab meat.

Are there vegetarian-friendly dishes available on the menu?

Yes! The menu features several vegetarian options, including the Vegetarian Quesadilla, Spinach & Feta Omelet, Vegetable Frittata, and the plant-based Impossible Burger.

Does the diner offer gluten-free menu options?

Yes, the menu includes gluten-free selections such as the Billion Dollar Bacon and several fresh fruit smoothies and frittatas.

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MenuRates is an independent restaurant menu archive and price directory. We are not officially affiliated with, endorsed by, or connected to Mason Diner (Cafe Mason) or any of its subsidiaries. All registered trademarks, logos, brand names, and menu item names remain the sole property of their respective owners and are displayed here under Fair Use guidelines for informational purposes only. For menu corrections or takedown requests, please visit our Disclaimer or Contact Page.