Put ¼ cup of kosher salt and 1 tablespoon of Jeff’s rub (purchase recipes here) in a plastic, glass or other non-reactive container.
Pour 1 quart of apple juice over the salt and rub and mix well.
Note: The salt will dissolve, the rub will not.
Set the brine aside while you get the tenderloins ready.
Trim the Tenderloins
Most packages of pork tenderloins include (2) of them.
Remove them from the package, rinse them with cold water and pat them dry with a paper towel.
To help make sure they cook evenly, trim off the tails and anything that looks irregular so that the ends are square and the thickness is consistent from end to end.
The pieces trimmed off are seasoned like everything else and cooked separately. Chef’s treats!
The tenderloins are then placed into a plastic bowl, zip top bag or other brining container.
Cover the tenderloins with the apple juice brine that you made earlier then place a lid on the container and put it in the fridge for at least 4 hours but I recommend overnight.
Once the pork tenderloins are finished brining, remove them from the brine and rinse them really well under cold water. This removes any excess salt that might have accumulated on the outside of the meat.
Seasoning the Pork Tenderloins
Apply a little yellow mustard and about a teaspoon of rub per tenderloin. Rub it all in together to create a nice paste on the outside of the meat.
Making the Pork Tenderloins Round
This is optional but I do highly recommend it as it affects the finished product in a big way.
You will notice that the tenderloins are sort of oblong and flat on the top and bottom.. we want them to be round so that they will cook more evenly and make better looking slices on the plate.
This is easy to do using butchers twine about every 2 inches along the meat.
Lay the pork tenderloins on a smoking plank but you can also use a Bradley rack or you can place them directly on the smoker grate if you want to.
The plank does not infuse as much smoke into the meat as it does on a grill due to the lower temperature but it does make a great presentation.
Leave the tied up tenderloins on the counter while you go get the smoker ready.
Get the Smoker Ready
Prepare your smoker for cooking at about 225°F with indirect heat.
Fill the water pan with water if your smoker has one and have enough smoking wood (apple recommended) to last about 1.5 to 2 hours.
Let the smoker preheat to 225 °F before placing the meat in the smoker.
Smoke the Pork Tenderloins
Place the pork tenderloins in the smoker directly on the grate or use a plank or Bradley rack as mentioned earlier.
Keep the smoke going the entire time if possible and let the pork cook until it reaches an internal temperature of 145 °F in the center of the meat as measured by a digital probe meat thermometer.
Note: spray the outside surface of the meat with apple juice about every 30 minutes but do it quickly to minimize heat loss. If your smoker has a difficult time recovering when opened, you should probably skip this step.
Serve it Up
When the pork reaches 145 °F, remove it from the smoker and let it sit for about 10 minutes before slicing.
Be sure to remove the butcher’s twine.
Apple Barbecue Sauce
Make a batch of apple barbecue sauce by mixing equal parts of Jeff’s barbecue sauce with apple juice.
I used 1/3 cup of apple juice and 1/3 cup of barbecue sauce.
These are great as an entree with a couple of vegetables but they also work well as a slider.
Use apple sauce instead of mustard as a base for the rub to switch things up.
Do not overcook the pork. The USDA now says that 145 °F is completely safe for whole cuts of pork (unground).
Since the pork is brined, be sure to use a rub like mine that has very little salt. If you use a store-bought rub it will probably be way too salty.