Situated in a cozy, gingham-trimmed room in Penn Hills, Mr. Ribbs focuses on barbecue, from slow-grilled ribs to grilled or deep-fried chicken to pulled-pork sandwiches. Meats are sometimes prepared (weather permitting) on large outdoor grills. Gumbo and fried vegetable appetizers are also available, as are many authentic Southern sides, from baked beans to collard greens.