Smoked pork loin is a lean, boneless or bone-in roast seasoned with a simple spice rub and cooked slowly over wood until juicy and lightly smoky. The method is straightforward, but a thermometer and a short rest matter: pork loin can dry out quickly if it is left on the smoker too long.
Ingredients
- 1 boneless pork loin roast, 3 lb (1.36 kg), preferably evenly shaped
- 1 tbsp (15 ml) olive oil or neutral oil
- 1 tbsp (15 g) kosher salt
- 2 tsp (5 g) smoked paprika
- 1 tsp (3 g) coarsely ground black pepper
- 1 tsp (3 g) garlic powder
- 1 tsp (2 g) onion powder
- 1 tbsp (12 g) packed light brown sugar
- 2–3 small chunks (about 4 oz/115 g total) apple, cherry, or pecan smoking wood, as appropriate for your smoker
Instructions
- Prepare the roast. Pat the pork loin dry with paper towels. Trim away any thick, hard surface fat, but leave a thin layer if present. If the roast has a narrow tail, tuck it underneath and tie the loin at 1½-inch (4-cm) intervals with butcher’s twine so it cooks more evenly. Let it stand while you prepare the rub; do not leave raw pork at room temperature for more than 2 hours.
- Season. In a small bowl, mix the salt, paprika, pepper, garlic powder, onion powder, and brown sugar. Rub the pork all over with the oil, then press the seasoning mixture onto every side. For deeper seasoning, you can cover and refrigerate the rubbed roast for up to 12 hours, but that optional chilling time is not included in the recipe timing. If chilled, take it out while the smoker heats.
- Heat the smoker. Preheat the smoker to 250°F (121°C), following the manufacturer’s instructions. Add apple, cherry, or pecan wood; use a modest amount so the smoke stays clean and does not overpower the pork. If using a charcoal grill as a smoker, bank the coals to one side, add a drip pan beneath the cooking area, and maintain indirect heat near 250°F (121°C).
- Smoke the pork. Set the roast on the grate away from direct heat, with the thicker end toward the hotter area if your smoker has a noticeable temperature difference. Close the lid and cook until the center reaches 140–145°F (60–63°C), usually about 1 hour 45 minutes to 2 hours 15 minutes for a 3 lb (1.36 kg) loin. Treat time as an estimate, not a doneness test. Keep the lid closed as much as practical, and check the temperature with an instant-read thermometer inserted into the thickest part without touching bone.
- Confirm doneness and rest. The USDA FSIS safe minimum for whole cuts of pork is 145°F (63°C), followed by a 3-minute rest; check the thickest part with a food thermometer. If the loin has not reached 145°F (63°C), continue smoking and recheck every 10–15 minutes. Transfer the roast to a clean cutting board, tent loosely with foil, and rest for 10 minutes. Carryover heat may raise its temperature slightly, but do not rely on that to make an under-temperature roast safe.
- Slice and serve. Remove the twine, if used, and slice across the grain into ¼–½-inch (6–12-mm) slices. Spoon any board juices over the meat and serve while warm.
Tips
- Choose the right cut. Pork loin is a wide, fairly lean roast; pork tenderloin is much smaller and cooks faster. This timing is for a 3 lb (1.36 kg) loin, not tenderloin. Ask the butcher for a center-cut loin of even thickness if possible.
- Use a thermometer. Smoker temperature, roast shape, and starting temperature all affect cooking time. A leave-in probe makes it easy to track the center without repeatedly opening the lid; an instant-read thermometer is useful for checking more than one spot.
- Adjust the rub to taste. Use regular paprika instead of smoked paprika for a milder smoke flavor, or replace the brown sugar with the same amount of maple sugar. The sugar helps the surface brown, but it is not needed for food safety.
- Avoid heavy smoke and overcooking. A few small wood chunks provide plenty of flavor. Thick billowing smoke can make the outside bitter, while cooking well beyond 145°F (63°C) can dry out this lean cut.
Serving Suggestions
Serve the sliced pork with baked potatoes, roasted sweet potatoes, cornbread, or creamy coleslaw. Green beans, grilled corn, or a crisp salad balance the rich smoke flavor. For a sauce, offer mustard barbecue sauce, apple chutney, or a light pan sauce on the side rather than covering the roast and masking its seasoning.
Variations
For a savory herb rub, replace the paprika and brown sugar with 1 tsp (1 g) dried thyme and 1 tsp (1 g) dried rosemary. For a sweeter barbecue profile, add ½ tsp (1 g) ground cumin and serve with barbecue sauce. A simple mustard coating also works: spread 1 tbsp (15 g) Dijon mustard over the oiled roast before applying the rub. It adds a mild tang and helps the spices adhere; the mustard flavor softens as the pork cooks.
Storage and Reheating
Refrigerate leftover pork within 2 hours of cooking, in a covered container. It keeps for 3–4 days in the refrigerator. For longer storage, wrap it well and freeze for up to 2–3 months for best quality; thaw in the refrigerator. Reheat slices covered with a spoonful of broth or water in a 300°F (149°C) oven until they reach 165°F (74°C), the safe temperature for reheated leftovers. A microwave also works: cover the slices, heat in short intervals, and check the center with a thermometer. Avoid repeated reheating; warm only the portion you plan to eat.
Frequently Asked Questions
How long does it take to smoke a pork loin?
At 250°F (121°C), allow roughly 1 hour 45 minutes to 2 hours 15 minutes for a 3 lb (1.36 kg) roast. Shape and smoker conditions can change the timing, so cook to 145°F (63°C) in the center, not to the clock.
Should pork loin be smoked fat-side up or down?
Either works. Put the fat side toward the main heat source if your smoker heats more strongly from below, as it can shield the meat slightly. Pork loin usually has a relatively thin fat layer, so temperature control and avoiding overcooking matter more than its orientation.
Can I smoke pork loin at 225°F (107°C)?
Yes. A lower smoker temperature can extend the cook, and the exact time will vary. Keep the smoker steady, use a thermometer, and cook until the center reaches the USDA FSIS minimum of 145°F (63°C), followed by a 3-minute rest.
Do I need to brine pork loin first?
No. The rub and careful temperature control are enough for a flavorful roast. A brine is optional and can add seasoning and moisture, but it requires extra time; if you use one, keep the pork refrigerated and account for the salt already in the brine when seasoning.
Can I use this method for pork tenderloin?
Not with the same timing. Tenderloin is narrower and typically cooks much faster, so start checking its temperature early. Use the same safe minimum—145°F (63°C) followed by a 3-minute rest—rather than relying on the loin’s estimated cook time.
Why is my smoked pork loin dry?
It may have cooked beyond 145°F (63°C), or it may have been sliced before resting. Check the temperature in the thickest part, remove the roast promptly once it reaches the safe minimum, and rest it for 10 minutes before slicing across the grain.
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Safety notes: safe minimum internal temperatures from USDA FSIS; raw and undercooked fish guidance from the U.S. FDA. Food safety notes
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