Combine the ponzu, vinegar, ginger and sesame oil in a bowl. Pat the tofu dry using kitchen paper and tear into chunks, then gently toss in the ponzu mixture.
Pour some boiling water over the edamame and set aside for 2 mins before draining thoroughly and seasoning with salt.
Divide the quinoa between bowls and top with the edamame, radishes and carrots. Spoon over the tofu and drizzle over the remaining dressing before scattering over the spring onions, seaweed and sesame seeds.