Arcodoro Pomodoro is little more than a simple pair of Sardinian joined-at-the-hip dining experiences. It's all at once a place to dine in elegance (Pomodoro), while it slips into something more comfortable and throws a little pizza (Arcodoro) at your appetite and some hip-grinding glamour at your libido (the bar guests). Yet the differences between this genetic aberration's dual personalities are as striking as they are similar. Everything on the menu is available in each Sardinian incarnation, except pizza is offered only in the more casual (and noisier) Arcodoro. The food is fresh, rustic and aromatic with oddball additions such as grated bottarga--the dried roe of gray mullet--and a couple of twists on carpaccio. The wine list is an intelligent capturing of Italian pressings as well as wines from the island of Sardinia. Plus, these restaurants are in Dallas, a city not known for its gray mullet.