Finely chop the onion and mash the tofu into small pieces with a fork.
Heat the oil in a frying pan and cook the onion for about 3 minutes, until softened and lightly golden.
Add the tofu, turmeric and nutritional yeast. Cook for 3–4 minutes, stirring constantly.
Remove the pan from the heat, season the scrambled tofu with black salt and pepper, and stir in the chives. Serve immediately with fresh bread.