Marinate the tofu in a teaspoon of dark soy for 15-20 minutes.
Soak the carrots and papaya in a bowl of ice water and keep in the fridge.
Meanwhile, to make the dressing, combine all the ingredients and mix well. The sweet, sour and salt must be balanced. Tweak to your taste.
Heat a tablespoon of olive oil in a pan on medium flame and sear the tofu squares for a minute on each side. Set aside to cool.
Drain the carrots and papaya and dry on kitchen towels. Place in a bowl with the chopped coriander and spring onions and toss with half the dressing. Mix in most of the peanuts.
To serve, put a piece of tofu in the centre of the plate, place a little salad on top. Arrange some more salad around the tofu. Repeat for the other plate. Drizzle both plates with the remaining dressing and sprinkle the reserved peanuts over both as well.