PREPARE TOFU (15+ minutes)
Wrap a block of firm or extra firm Tofu with paper towelling or a clean kitchen towel. Place a couple heavy cookbooks on top.
Preheat oven to 400 F.
SPICY SAUCE
Add all sauce ingredients (tamari, water, garlic, horseradish, maple syrup, and sriracha) to a small sauce pan over medium-high heat. Let it come to a boil, reduce heat to simmer. Add in slurry of cornstarch and water to slightly thicken sauce and let simmer for 3 or 4 minutes. If you prefer the sauce to be a bit thicker, add another tsp of cornstarch.Remove from heat and let cool - strain and place into squeeze bottle or pouring jar. Leftovers can be stored in the fridge in an air tight container.*Horseradish - if fresh is not available sub with creamed horseradish (to taste).
CRACKED BLACK PEPPER AND SESAME TOFU
Once the tofu is pressed, cut it into ~ 1" cubes. Sprinkle with a generous amount of cracked black pepper, garlic powder, and sesame seeds. Gently roll tofu cubes in pepper and seeds to coat.
Heat enough oil to coat the bottom of a pan* and a sprinkle of sea salt until it shimmers. Place cubes into pan and sear each side. Next place pan into pre-heated oven to bake for 5 minutes. Drizzle with 2 - 4 tbsp of spicy horseradish tamari and toss to incorporate. Set aside in a serving dish.*cast iron pan if available as it get really hot and retains the heat - but an oven-proof skillet if you don't have a cast iron.
GUACAMOLE and TOPPINGS
In a medium bowl, gently mash the avocado with a fork. Add chopped cilantro, minced red onion, lime juice, and salt - mix just to incorporate. I like to keep the guacamole pretty chunky.Cut mango into cubes (here's a great method). Set aside.Shred the lettuce, slice the green onions, and place on serving dish with sprouts.
PUTTING IT ALL TOGETHER
Warm tortillas on a dry grill pan over medium-high heat until toasty on both sides.
Fill each tortilla with shredded lettuce and sprouts, topped with a heap of guacamole, mango cubes, a sprinkle of chopped green onions, and 3 tofu cubes. Drizzle tacos with horseradish sauce. Enjoy!