The latest arrival to Austin's burgeoning food scene brings with it the sleek sophistication of big city bistros, with a who's who crowd to match. Contemporary steel framing and rich wood accents emphasize Olivia's cosmopolitan bent. The appealing Italian-inspired menu is also a culinary gauntlet that challenges diners to expand their flavor palates with dishes such as the plump and savory lamb's tongue fricassee— delicious, but not for the faint of heart. A less adventurous but equally satisfying option is the delicate potato gnocchi served in white truffle-ricotta cream with braised lamb shoulder. To end, warm lemon-ginger cake is sweet perfection.