Put the spinach in a bowl, cover it with boiling water. Let it rest.
Meanwhile lightly whisk the eggs. Add the tofu and gently mash it with a fork.
Add the soy sauce. Thinly slice the spring onion, add to the mixture.
Drain the wilted spinach, rinse with cold water. Squeeze the water out as much as you can, then chop it finely.
Add the spinach to the mixture.
Heat some groundnut oil in a frying pan. When hot, pour in the mixture. Cook for a couple minutes over medium heat, then cover, turn down the heat and cook for 5 more minutes. Take the lid off. If the surface is firm, sprinkle some sesame seeds on top and serve.