For that delicious soup you have to take water and milk in propotion 1 to 1. So if we take 1 liter of water we need 1 liter of milk. When it is boiling add potato and onion in small pieces and in several minutes add the small branches of cauliflower. Boil untill vegetables are soft then add salt, blackpaper and melted cheese...few minutes more to be cooked and it's done.....decorate with fresh herbs and have a nice meal.