Memphis Dry Rub Ribs

In a small bowl, combine the paprika, chili powder, brown sugar, salt, cumin, black pepper, and cayenne. Rub the mixture all over the ribs. Cover the ribs loosely with plastic wrap and refrigerate for 3 hours. Preheat the oven to 325 °F. Let the ribs come to room temperature for 30 minutes. Line a rimmed baking sheet with aluminum foil. Place the ribs, membrane side down, on a wire rack set over the prepared baking sheet. Drizzle 3 tablespoons water into the bottom of the pan. Cover the pan tightly with foil and bake for 1 1/2 hours. Uncover and continue cooking until the ribs are very tender and lightly browned, about 30 minutes more. Test for doneness by poking a fork between the bones. Let the racks stand for 10 minutes before cutting into individual ribs.