1. In a seven-liter pot, cook the spinach and water about 15 minutes. Drain it well and let cool. Transfer to the food processer.
2. Add the remaining ingredients. Pulse a couple of times in the food processor until it becomes a unified mixture (not longer; you don’t want it finely ground).
3. Transfer the contents of the food processor back to the pot. Bring the soup almost to a boil, then serve.