A whole pork shoulder is the best deal in barbecue. It's one of the cheapest cuts at the store, it feeds a crowd, and it's almost impossible to mess up.
Here's why it's so forgiving. Pork shoulder is packed with fat and collagen, the tough connective tissue that makes a cheap cut chewy. The whole point of the long, slow cook is to melt that collagen into gelatin, the rich, silky stuff that lets the meat pull apart and stay juicy. And collagen doesn't melt at a single temperature, it melts slowly, over hours, in a wide window. That slow melt is why pulled pork takes all day, and it's also your safety net: a lean cut gives you a thirty-second window, a pork shoulder gives you hours. An extra hour just makes it better.
So you stop cooking to the clock and start cooking to feel. You stop panicking about timing, because once it's done it holds hot for hours. And the finish is the easy part: a generous pour of melted tallow through the shredded pork takes it to restaurant level.
This is the full method with the science behind each step. The one thing that separates dry, sad pulled pork from the juicy stuff at a great joint is patience, cook it all the way to probe-tender, and the rest takes care of itself.