If your spinach is on the stem, pick the leaves off for use in the recipe. Yu can keep the stems for a soup or other use. Wash the spinach leaves and cook in a pan with only the water which is clinging to the leaves. Stir until cooked then tip into a sieve to cool and drain. When cool, squeeze the spinach with your hands to remove excess water, then chop it finely with a knife or in a food processor
In a bowl crumble finely the tofu with your fingers
Add the rest of the ingredients, stirring and mashing with a fork to mix everything together well. Wait until the spinach is cool to add it.
Option
You can leave the spinach out, or you can use chopped mushrooms (fried until dry), or chopped herbs, or whatever ingredient you fancy flavouring your tofu mix with!