Soak the soya chunks in hot water for 15 minutes until softened, then squeeze out all excess liquid thoroughly.
Preheat your oven to 400°F and toss the diced beets and halved radishes with half of the olive oil on a parchment-lined baking sheet.
Roast the vegetables for 20 minutes or until the beets are fork-tender and the radishes are slightly caramelized.
Place the dry couscous in a heat-proof bowl, add 1/2 cup of boiling water, cover, and let sit for 5 minutes before fluffing with a fork.
Heat the remaining olive oil in a non-stick skillet over medium-high heat and sear the soya chunks until golden brown and crisp on all sides.
Stir in the tamari and a pinch of ground ginger, tossing the chunks until the liquid is fully absorbed and the protein is well-coated.
In a large mixing bowl, gently fold the roasted beets, radishes, and thawed edamame into the fluffed couscous.
Plate the couscous mixture and top with the seared soya chunks, fresh avocado slices, and a sprinkle of toasted sesame seeds.