The new Petit Louis in Columbia got its first real attention -- a review by Richard Gorelick of the Sun. He thinks it holds up to its established sibling in Roland Park. He recommends a lentil salad, the escargot, the roasted chicken and more.
Like Gorelick, I have loved the takeout / eat-in counter that the Foreman-Wolf team opened next to Petit Louis. Le Comptoir does incredible desserts, and they have sandwiches, coffee and breads as well. You should really check it out -- especially paired with a walk around the lake.