Bay Area/ San Francisco

New Thai Hotspot Mahasan Spices Up Downtown San Mateo

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Published on May 13, 2026
New Thai Hotspot Mahasan Spices Up Downtown San MateoSource: Google Street View

Downtown San Mateo’s main dining drag just picked up a bold new neighbor. Mahasan has quietly started serving at 147 E. Third Ave., rolling out a compact menu of Thai comfort food in a modest, no-fuss dining room. After a soft opening in April, the restaurant is now pouring most of its energy into dinner service, with scratch-made curries, shareable plates and a few nostalgic desserts leading the charge.

In a statement to The Mercury News, the team - a collaboration between Taste & Glory and Thonglor SF - said they "focus on fresh ingredients, rich homemade curries and sauces, and balancing authentic flavors while making the dishes approachable for everyone." The owners told the paper they launched Mahasan to spotlight bold flavors and recipes pulled from Thai comfort food and family-style cooking.

Menu Highlights And Drinks

The lineup leans into rich, crowd-pleasing dishes, from deep-fried garlic prawns with a punchy garlic sauce to a lychee duck curry built around seared duck breast in red curry with lychee. For dessert, there is a burnt-butter toast topped with vanilla ice cream, a clear nod to sweet, indulgent street-snack territory. On the drinks side, specialty beverages such as lychee iced tea, Thai iced tea and butterfly-pea lemonade pour alongside beer and wine. Those items appear on Mahasan's website and in a menu preview on Giftly.

What It Means For Downtown San Mateo

Mahasan joins a busy downtown strip that has been racking up new openings this spring, adding a neighborhood-focused Thai option to the mix. Local coverage of Peninsula restaurant debuts has already name-checked Mahasan among the latest arrivals, highlighting both the churn and the continued growth of the area’s dining scene; see the roundup from Mountain View Voice.

Hours And Visiting

According to a local listing on Roadtrippers, Mahasan lists dinner hours from 5 to 8:30 PM on Sundays through Thursdays, and from 5 to 9 p.m. on Fridays and Saturdays. The restaurant appears in the Downtown San Mateo business guide and can be reached at (650) 389-7491. For reservations or a look at the full menu, diners are directed to check Mahasan's website or the Downtown San Mateo directory.