A couple of butt questions.
1. When pulling there seems to be sections of darker moist meat, and whiter dryer meat. What is this?
2. Most people say to rest the meat foiled, usually in a cooler. Why? Is this necessary? I let my last butt sit 10 min on the counter then chopped it. It tasted fine, though a bit dry.
3. Many people say to cook to tender rather than temp. What specifically does tender mean, should the meat fall apart when a fork is put in?
John, as others already mentioned, the pork shoulder butt is MANY muscles, and one of them is especially lighter in color and not near as forgiving as the others. If I think to, I'll often quickly pull it into very small pieces and scatter it in the rest of the pork.
Regarding holding in a cooler, to be honest, it's not necessary if you know how to cook bbq, but is a VERY convenient way to hold til serving for a few hours if needed. Learning to time a pork butt cook is part of the learning process, and sometimes you have to hold to transport a ways or because you need to smoke some chicken or something. Keep in mind that for safety, it should stay above 140*, but usually the issue is that it's so hot that if immediately wrapped in foil it will keep cooking. I saw just the other day a video where Harry Soo, a bonified bbq champ, was suggesting letting a brisket's internal temp drop to 170-175* before holding hot in a cooler. No sense in cooking to the perfect tenderness to only let it start drying out in a cooler. Anything wrapped hot in foil WILL continue to cook. Anyhow, Harry's thought applies to pork butts, as well, but it's only pertinent if you know what you're wanting in terms of tenderness, your last question.
Don't just go by how loose the bone is. Often the butt might be done on one side, but not the other. The internal temp will vary quite a bit, so don't go by that either. Harry Soo suggests his bbq students to cover up the display on their Thermapens while probing for tenderness! For a pork butt, you want it so tender that you can stick a fork in and twist it. Longer you cook, the more fat and connective tissue will render and turn to gelatin, but if there's nothing left at all when you pull it, you probably cooked too long and have started drying it out. Don't fret, though. Pork butt is very forgiving. If you take one a little too far, just use more finishing sauce. If not cooked quite as much as you'd hoped, chop finely and you'll have a better idea for next time.
Happy BBQ'n!
