OSO is the only steakhouse between Westhampton and East Hampton, featuring the finest, mouth-watering steaks and chops, as well as Southampton’s acclaimed local fish and seafood. Under the culinary direction of Four-Star Chef Peter Dunlop, OSO serves breakfast, lunch and dinner daily. OSO offers several separate cozy rooms, a friendly full-service bar, an outdoor café for al fresco dining with European style, and leisurely pool-side service. OSO is defined by beach-community-casual-luxury and an eclectic décor with hardwood floors and tables, oriental rugs, leather banquettes, and the stunning work of diverse local artists.

Fresh and natural are always the order of the day at OSO, since Chef Dunlop relies on organic, seasonal, and locally-produced ingredients for his haute cuisine re-interpretations of classic steak house fare and regal presentations of his own culinary specialties – which include such signature Dunlop temptations as Grilled Prime Aged Black Angus Porterhouse Fiorentina (a marinated 32 oz Porterhouse with baby spinach and a Balsamic reduction), Orange-Spiced North Atlantic Hard Shell Lobster (with organic blue potato salad, wild arugula and orange butter), and Macadamia & Pine Nut Crusted Striped Bass (with Champagne Beurre Blanc), along with equally memorable duck dishes, creative salads and hearty soups.

Dunlop’s deliciously decadent desserts include Classic Vanilla Bean Crème Brule, Rein De Saba Chantilly Cream, Double Rich Chocolate Cake & Fresh Vanilla Whipped Cream and Peter’s Mascarpone Lemon Cheese Cake.

Chef Dunlop has created the Inn’s catering for once-in-a-lifetime weddings, seal-the-deal corporate events and chic civic/charitable/arts events since 2007. He was previously chef at Café des Artistes in Manhattan and executive chef for the Metropolitan Opera. His other culinary credits include the Jockey Club at the Ritz Carlton Hotel, the American Hotel in Sag Harbor, and JL East in East Hampton.

OSO is a can’t-go-wrong choice for Inn guests, locals and visitors alike. For reservations, call 631-283-1166.

Breakfast Menu   |   Children's Lunch Menu   |   Lunch Menu  |   Price-Fixed Menu

Children's Dinner Menu   |   Dinner Menu   |   Specialty Drinks  |   Dessert, Coffee and Tea Menu

Food & Beverage Services

• Oso offers full breakfast menu, 7:30 a.m. – 11:00 a.m.
• Full lunch menu 12:00 p.m. – 2:00 p.m. 7 days a week
• Full dinner menu 5:30 p.m. - 10:00 p.m. 7 days a week
• Meals can be enjoyed poolside or in the outdoor courtyard, weather permitting. Tented events for business or social gatherings for 500 on our expansive lawns.
• Catering service for all meetings and social occasions provided by our Sales team and our Executive 4-star Chef, Peter Dunlop

Catering to Your Every Need

Catering services are also available for all meetings and social occasions and are provided by our Sales team and Executive 4 Star Chef, Peter Dunlop. Our team can create a gourmet wine dinner, reunion events, weddings (indoors or outdoors), or a simple but delicious breakfast, lunch or dinner to accommodate your corporate meeting. The Southampton Inn catering department can craft an exquisite menu for all tastes and budgets, including clambakes at Cooper’s Beach, off-site dinners at a local winery or even a laid back BBQ on our lawns to help you create your own memorable Long Island dining experience.