1. In a small bowl, mix brown sugar, paprika, garlic powder, pepper, salt, espresso powder, allspice, and chili powder.
2. Rub all over the meat, coating all sides.
3. Place in a roasting pan (for ribs, place in a single layer on two rimmed baking sheets) and let sit, covered, in the refrigerator for one hour.
Notes: Can be prepared two days ahead of time. Store, covered, in the refrigerator or freeze up to three months. Defrost in the refrigerator. Rewarm, covered, in a warming drawer or 300 degrees Fahrenheit oven.