Wash the spinach thoroughly.
Blanch the spinach briefly in boiling water.
Squeeze the spinach well to remove excess water.
Finely chop the squeezed spinach.
Put the chopped spinach into a bowl.
Add the ricotta.
Grate some nutmeg into it.
Season the filling with salt and pepper.
Mix everything well and taste the filling.
Optionally, stir 20 g Parmesan into the filling.