Mix the rub ingredients together and coat the pork all over, pressing spices into meat.

Smoke until the internal temp reaches 190 degrees. At this point the bone should slip easily out of the meat and the meat should be falling apart in some areas. The total cooking time will be 8 to 10 hours. During that time, make the sauce.

In a large pan, whisk the sauce ingredients. Bring to a simmer over medium heat and cook for about 5 minutes, stirring occasionally. Taste and adjust the seasonings, if necessary. It should be spicy and tangy.

Transfer the pork to a baking sheet and tightly cover with aluminum foil. Let it rest for 30 minutes.

Pull the warm meat apart with your fingers or with two forks. Discard large pieces of fat or sinew. In a large bowl, moisten the pork with as much sauce as you like. Pile on hamburger buns and serve warm.