Pork Rub: Apply the rub in advance, even 8-24 hours before smoking. You can also apply just before cooking in combination with a thin layer of oil. Spread the rub generously on the thicker portions of the shoulder.
Spray or Injectable: Add two tablespoons or rub + 1 cup of apple juice and spray on the meat while it is smoking. Once the pork butt hits 150 to 160°F, the moisture from inside the meat starts to move to the surface and begins evaporating which cools the surface of the meat.
Inject: Make marinade with 1/4 cup of rub and 1 cup of warm apple juice and they inject it deep into the meat.
Use on pork roasts, chops and ribs as well as ham.