In a deep container, mix together the mince with the bread slices (soaked in water and drained beforehand) and water and stir the mixture for 10 min.
Cover with foil to keep it fresh and put in the fridge for 24 hours.
Stir the mince another 10 min. Shape meatballs from it. Put the meatballs in the fridge and leave them there until the evening.
Take the meatballs out 10 min. before cooking them. Fry in a Teflon pan without oil or cook on a grill.