Atop San Francisco's Union Square, O' by Claude Le Tohic represents the pinnacle of modern French gastronomy, where Michelin-starred precision meets California's pristine ingredients in an elemental celebration of water, fire, and earth. This crown jewel of the six-story ONE65 culinary destination transforms fine dining into an intimate exploration of nature's fundamental forces.

Claude Le Tohic's extraordinary journey from Brittany's coastal kitchens to international acclaim defines O's culinary philosophy. The Meilleur Ouvrier de France recipient and former three-Michelin-starred chef de cuisine under Joël Robuchon brings decades of refined technique to San Francisco's dining landscape. His 2021 Michelin star recognition and leadership of Team USA's victorious International Catering Cup campaign in 2023 cement his position among culinary royalty. The restaurant's name, derived from the French "eau" (water), reflects Le Tohic's elemental approach to gastronomy.

O's five- and nine-course tasting menus showcase Le Tohic's mastery of classic French techniques elevated by California's seasonal bounty. Signature presentations include abalone with seaweed butter, curry, daikon, and crispy rice, alongside barbecued langoustine with braised fennel, tomato confit, and rouille. Each evening begins with a generous caviar trio accompanied by freshly baked breads and concludes with an enchanting mignardise cart presentation. The rotating seasonal menu ensures every visit reveals new interpretations of Le Tohic's elemental philosophy, positioning O' among the best restaurants San Francisco offers for discerning gourmands.

The restaurant's elegant atmosphere spans the upper floors of ONE65, featuring intimate seating with subdued lighting that creates warmth without pretension. Professional service enhances every moment, from the eight-seat chef's table within the kitchen to private dining options including The Moss Room and The Cherrywood Room. The curated wine program complements each course, while the sommelier's expertise guides guests through perfect pairings. O's dress code maintains the sophisticated ambiance expected of Michelin star restaurants San Francisco.

Reservations at O' by Claude Le Tohic require advance planning, as this intimate space fills quickly with those seeking San Francisco fine dining at its most refined. Whether celebrating special occasions or pursuing culinary excellence, O' delivers an unforgettable journey through Le Tohic's elemental mastery, establishing itself as essential dining for luxury travelers and local gourmands alike.