Press the extra firm tofu between paper towels for 15 minutes to remove excess moisture, then cut into 1-inch cubes.
In a small bowl, whisk together the tamari, rice vinegar, grated ginger, minced garlic, and red pepper flakes to create the stir-fry sauce.
Heat the toasted sesame oil in a large wok or non-stick skillet over medium-high heat.
Add the tofu cubes to the pan and sear for 8-10 minutes, turning occasionally until all sides are golden brown and crispy.
Toss in the broccoli florets, sliced red bell pepper, and shelled edamame, sautéing for 5 minutes until the vegetables are tender-crisp.
Pour the sauce over the tofu and vegetables, tossing constantly for 1-2 minutes until the glaze thickens and coats everything evenly.
Season with sea salt and black pepper, then garnish with sesame seeds before serving hot.