How do you keep Boston butt from turning black while cooking on a smoker?

To prevent Boston butt from turning black while smoking, ensure that your smoker temperature is controlled and kept between 225°F and 250°F. Use a good quality rub without too much sugar, as sugar can burn and create a dark crust. Additionally, consider wrapping the meat in foil or butcher paper after it reaches a desired color to protect it from direct heat and smoke, which can also help maintain moisture. Regularly monitor the cooking process and adjust airflow as needed to avoid excessive charring.