Using a folded paper towel and tongs, oil the grill grates just before placing the tofu on the grill. Place the tofu on the grill and leave it alone for 4 minutes. Turn the tofu using your tongs, and allow it to cook another 4 minutes. Remove tofu from the direct heat and onto the upper rack of your grill, which you have lined with foil. Reduce the heat to medium. Using a basting brush, brush both sides of tofu with BBQ sauce. Add sauce every 10 minutes of so until you're ready to serve. The longer you leave it on the grill, the more of a crunchy crust it will have.
Memphis-Style Dry Rub
Measure 1 teaspoon each of chipotle powder, sweet paprika, smoked paprika, garlic powder, salt, cumin, cinnamon, ginger, black pepper, brown sugar, and oregano; place all ingredients into a small container with a lid.
Chipotle BBQ Sauce
1 tablespoon butter
2 cups chopped onion ( about 1 medium one)
1/4 cup chopped garlic (about 6 cloves)
1/2 teaspoon garlic powder
2 tablespoons Jack Daniel's whiskey
1/2 cup brown sugar
1/4 cup cider vinegar
3-4 ounces chipotle peppers from a can (about 1/2 can)
1/2 cup water
1 24-ounce bottle of organic ketchup
1 tablespoon soy sauce
6-8 dashes liquid smoke