3 Great Milwaukee Hole-in-the-Wall Barbecue Joints. Welcome to Milwaukee, WI, where among the city’s gastronomic treasures are some great Milwaukee hole-in-the-wall barbecue joints, each with its own unique flair and flavors that contribute to the rich tapestry of local cuisine. In this article, we’ll delve into three such establishments, showcasing why they’re considered great Milwaukee hole-in-the-wall barbecue joints and offering just a taste of the city’s diverse barbecue offerings.