Add 1/3 cup beet juice, 3 tablespoons soy sauce, 2 teaspoons maple syrup, 1/2 teaspoon garlic powder, 1/2 teaspoon onion powder, 1/2 teaspoon ground coriander, 1/2 teaspoon ground mustard, 1/2 teaspoon smoked paprika, 1/8 teaspoon ground nutmeg, 1/8 teaspoon ground allspice, and 1/8 teaspoon black pepper to an airtight container, then mix well.
Cut 1 block extra firm tofu into thirds lengthwise, then cut each third in half lengthwise so you end up with six long rectangles.
Use a paring knife to trim the edges and round the ends of the tofu rectangles into a hot dog shape (save any scraps to use in other dishes like stir-fries).
Place the tofu dogs in the container with the marinade, then close the lid tightly.
Gently turned the container upside down a few times to distribute the marinade.
Place the container in the fridge to let the tofu marinate for at least 6 hours, turning the container upside down occasionally to redistribute the marinade.
Once the tofu has finished marinating, cook the hot dogs however you like: grill them at 375–400°F for 3–5 minutes per side, bake them at 350°F for 20 minutes, or pan-fry them over medium heat for 3–5 minutes per side.