Cooking a whole pig (in this case, a 75- to 125-pounder, butterflied and with hair removed) in a backyard pit puts the neighborhood on notice: You’re taking the party to a new level with pig roasting. Come hungry, y’all, and bring your friends. This D.I.Y. cooker goes up, and breaks down, in an hour tops. Check local laws about open fires in town limits, but many larger cities allow open flames as long as you’re cooking. And, brother, you will be cooking!