Slice the smoked tofu into thin, "meaty" strips.
In a shallow dish, combine beetroot juice, soy sauce, apple cider vinegar, smoked paprika, maple syrup, garlic powder, and onion powder. Submerge the tofu strips in the marinade and let it sit for at least 30 minutes (or up to 2 hours for a deeper color and flavor).
Air fry at 200c for about 10-12 mins flipping halfway
Mix the Russian dressing ingredients- I like it chunky but feel free to adjust
Spread the Russian dressing on buttered bread. Add a layer of sauerkraut, marinated tofu slices, and vegan cheese if using
Butter the outsides of the sandwich and grill in a pan over medium heat for about 3-5 minutes on each side, until golden and crisp.
I finished mine under the grill (broiler) to get it extra crisp