Located in the Atelier 505 condominium building, an intriguing approach to seasonal American fare enlivens the South End dining scene.

The Scene
True to its name, Sibling Rivalry provides patrons with a split menu in which two brothers offer different approaches to common ingredients. These aren't just any old siblings: Bob Kinkead is one of Washington, D.C.'s most recognizable chefs, while David has worked in some of Boston's finest kitchens. Tthe restaurant is a study in minimalist chic, with warm earth tones surrounding diners. Deftly efficient servers gladly point out the menu's numerous intricacies.

The Food
The Kinkeads have fun with the concept, dotting their respective menus with offbeat, multi-ethnic creations like halibut poached in olive oil with Sicilian sweet-and-sour eggplant, or grilled salmon filet with an Anaheim chile relleno and tomatillo-cilantro sauce. Typical of the numerous starters on offer is fresh squid, lightly fried Vietnamese-style and served with a clean-tasting green papaya salad and tangy ginger-cilantro dipping sauce. Rich desserts like a chocolate dacquoise with espresso-tinged Creme Anglaise are not for the timid.