The phrase "hog roast" refers to the act of cooking a whole pig on a spit or grill over an open fire, usually for a social gathering or celebration. Full definition
My family had hog roasts quite a bit growing up for family reunions and graduations, but we always had a professional come do it. (blog.webicurean.com)
In additions, food and beverages will be available, including the famous Hog Roast lunch. (paperandprint.com)