Press the tofu between paper towels for 10 minutes to remove excess moisture, then cut into 1-inch cubes.
In a medium bowl, toss the tofu cubes with cornstarch, sea salt, and black pepper until evenly coated.
Heat the sesame oil in a large non-stick skillet over medium-high heat.
Add the tofu to the skillet and sear for 3-4 minutes per side until golden brown and crispy.
Remove the tofu from the pan and set aside.
In the same skillet, add the broccoli florets, sliced red bell pepper, and shelled edamame with a splash of water.
Steam-fry the vegetables for 5 minutes until tender-crisp.
Stir in the minced garlic and grated fresh ginger, cooking for 1 minute until fragrant.
Whisk together the tamari and rice vinegar, then pour the mixture over the vegetables.
Return the crispy tofu to the pan and toss everything together for 1-2 minutes to glaze.
Garnish with sesame seeds and serve immediately while hot.