How to Smoke a Pork Butt for Pulled Pork

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If brisket is the exam, pork butt is the practice run you are allowed to fail.

It has more fat, more connective tissue and a much wider margin than a brisket flat. Pull it early and it will not shred, but it will still be good. Leave it an hour long and almost nothing happens. That forgiveness is why it is the cut to learn on, and why it is what you cook when you are feeding thirty people and cannot afford a disaster.

Butt, shoulder, picnic: what to actually buy

The confusing part happens at the counter. A whole pork shoulder splits into two cuts:

• Boston butt (also just "pork butt") is the upper section. Well marbled, roughly rectangular, usually 6 to 10 lb bone-in. This is what you want.
• Picnic shoulder is the lower section. Leaner, more sinew, awkwardly shaped, with a skin cap. It makes decent pulled pork and is more work for a worse result.

Nothing about the butt is near the animal's rear. The name comes from the barrels, called butts, that colonial New England packers shipped shoulders in.

Buy bone-in. The blade bone moderates how fast that section heats, the meat near it stays moister, and the bone pulling out clean is the single most reliable doneness signal in barbecue.

Time and temperature

Roughly 90 to 120 minutes per pound at 225°F. An 8 lb butt is therefore a 12 to 16 hour cook, plus rest.

Pit temperature	Per pound	8 lb butt
225°F	90–120 min	12–16 hr
250°F	81–108 min	11–14 hr
275°F	74–98 min	10–13 hr

Wrapping takes roughly 20 percent off. Our smoking calculator turns any weight and pit temperature into a window and, more usefully, into the time you need to light the fire to eat when you planned to.

Pork butt is slower per pound than brisket, which surprises people. It is thicker through the middle and carries more collagen to render.

The temperatures that matter

USDA FSIS puts the safe minimum for whole-muscle pork at 145°F with a three-minute rest. A pork butt passes that in the first few hours and is completely unshreddable.

You are going to 200°F to 205°F, and for the same reason as brisket: that is where collagen finishes turning to gelatin. Below about 195°F it will slice but not pull. The meat temperature chart lists safe minimums and pull temperatures side by side.

The better test is mechanical. Grab the blade bone and twist. If it turns freely and slides out clean, it is done regardless of what the thermometer says. If it resists, give it another 45 minutes.

Trimming and seasoning

Barely trim it. Take off any loose flaps that will burn and even up the fat cap to about a quarter inch, and stop. Unlike brisket there is no hard interior fat worth chasing, and the fat you leave renders down through the meat.

Fat cap up or down is an argument with no winner. Cap down protects the meat from direct heat below, which matters on an offset with a hot firebox side. Cap up lets rendering fat run over the meat, which sounds better than it works. On a pellet grill it makes almost no difference.

For seasoning, pork butt is the cut that least needs a complicated rub. Salt, coarse black pepper, and paprika will do. If you want the sweeter Kansas City profile, add brown sugar, but keep it off the very outside if you are running above 275°F because sugar burns.

A dry brine is worth the trouble: salt at 0.5 to 1 percent of the meat's weight, applied the night before and left uncovered in the fridge. It seasons deeper than a surface rub and dries the surface for better bark. Our brine and cure calculator does the percentage for any weight.

The stall and the wrap

Somewhere around 150°F to 170°F the temperature stops climbing, sometimes for hours. This is evaporative cooling, not a problem, and pork butt stalls hard because there is so much moisture to shed.

Wrap when the bark has set and the colour is where you want it, usually a little past halfway. Foil is the usual choice here, more than on brisket, because pulled pork is going to be shredded and mixed anyway so soft bark matters less. Butcher paper keeps more texture if you like bark pieces through the finished pork.

Or ride it out. Unwrapped gives the best bark and the least predictable finish, which is fine for a cut this forgiving.

Rest, then pull

Rest for 30 to 60 minutes minimum, longer is better. A butt holds heat remarkably well and will sit wrapped in a cooler for hours.

Then pull it. Two forks work. Meat claws are faster and let you work it while it is still too hot to handle. Heat-resistant barbecue gloves and your hands are best of all, because you can feel and discard the gristle that forks miss.

Mix the bark back through rather than leaving it on top, and add back any juice from the wrap. That juice is the difference between good pulled pork and dry pulled pork, and people throw it away constantly.

How much to buy

A pork butt yields about 55 percent of its raw weight once fat renders and the bone comes out. That is the number that catches people out.

For 20 guests at a standard portion you need roughly 9 lb of cooked pork, which means buying about 16 lb raw, or two 8 lb butts. The portion planner does this for any guest count, and how much meat per person for a BBQ covers the reasoning.

Two smaller butts also cook faster than one large one and give you more bark per pound, which is a good trade.

Equipment that matters

A leave-in probe thermometer. A 14 hour cook is an overnight cook, and a dual-probe unit watching pit and internal temperature is what lets you sleep. A wireless meat thermometer is the first accessory to own.

A drip pan. Pork butt renders a lot of fat. Catch it.

Something to hold in. A cheap insulated cooler turns a finish-early panic into a non-event.

Common mistakes

1. Pulling at 195°F because the clock says so. Twist the bone. If it resists, wait.
2. Throwing away the wrap juice. It is the moisture in your finished pork.
3. Over-trimming. This is not brisket. Leave the fat.
4. Planning from the short end of the range. A 16 hour estimate can be 18.
5. Buying a picnic shoulder because it was cheaper per pound, then fighting the sinew.

The short version

Buy a bone-in Boston butt, 8 lb or so. Dry brine overnight. Trim lightly, season simply, smoke at 225°F to 275°F for 90 to 120 minutes per pound. Wrap when the bark sets. Pull it when the blade bone twists free, around 203°F. Rest at least half an hour, shred, and mix the juice back in.

Put your weight into the smoking calculator for a start time, and check the portion planner before you go shopping.