3 Great St. Louis Hole-in-the-Wall Barbecue Joints. In this article, we’ll delve into the world of barbecue, but not just any barbecue; we’re talking about the great St. Louis hole-in-the-wall barbecue joints that have quietly earned their place in the hearts and stomachs of locals and visitors alike. If you’re a barbecue enthusiast with a penchant for hidden culinary gems, you’re in for a treat as we embark on a flavorful journey through the heart of St. Louis, Missouri.