5) Finishing. When it hits about 170°F, collagens, which are part of the connective tissues, begin to melt and turn to gelatin. That's magic baby. The meat gets much more tender when this happens. And juicy. When it hits 195°F, it may be ready, and it may not be ready. Usually I shoot for 203°F, but it's time to check. The exterior should be dark brown. Some rubs and cookers will make the meat look black like a meteorite, but it is not burnt and it doesn't taste burnt. There may be glistening bits of melted fat. On a gas cooker it may look shiny pink. If there is a bone, use a glove or paper towel to protect your fingers and wiggle the bone. If it turns easily and comes out of the meat, the collagens have melted and you are done. If there is no bone, use the "stick a fork in it method". Insert a fork and try to rotate it 90 degrees. If it turns with only a little torque, you're done. If it's not done, close the lid and go drink a mint julep for 30 minutes. If the internal temp hits 195°F but the meat is still not tender, push on up to 203°F. At this number the meat seems to soften significantly. If it is still not soft, you've just got a tough butt. Wrap tough butts in aluminum foil and let them go for another hour. If you can't control the temp on your cooker, wrap the meat in heavy duty foil and move it indoors into a 225°F oven. Do not add sauce while it is on the cooker. That comes after you pull it.