Stock up on etouffee and thick, creamy gumbo at this downtown eatery inside the tunnel.. In Short Smart downtowners know about the soulful Southern fare at this wonderfully reliable Louisiana-style cafeteria. Discerning diners and tough critics alike agree that this is the place for jambalaya, buttery shrimp etouffee, red beans and rice with link sausage, and homemade jalapeno cornbread. The decor is warm and friendly, and features works from local Houston artists on the walls. Treebeards offers unfussy service and reasonable prices for lunch.