First rub the rock salt into the chicken pieces and then wash the chicken in the white wine vinegar and water. Leave for 10 minutes. Rinse and dry and place onto a clean plate.
For the marinade place the following ingredients into a large bowl: 3 tablespoons of olive oil, coriander, cinnamon, saffron, pinch of fine salt, ½ the onions, garlic, cumin, ginger, paprika, turmeric (colourant). Mix all these ingredients into the oil and crush the garlic and add a little water to paste.
Roll the chicken pieces into the marinade and leave for 10-15 minutes.
For cooking use a tagine (traditional Moroccan dish) or a deep, heavy bottom casserole dish. Heat the dish up and add 2 tablespoons of olive oil to the hot dish. Drop in the chicken and pour over the excess marinade juices. Add the remaining onions, gizzards, chicken livers, olives and chopped preserved lemons (no pulp).
Cook in medium hot oven (150°C) for 45 minutes.
Serve with fresh bread or loaf.