Preheat the oven
Preheat the oven to 80°C.
Heat the oil in a frying pan. Season the chicken breast, brown for approx. 4 mins. on each side, remove from the pan, transfer to the preserving jars. Add the olives, orange peel, thyme and garlic. Place the jars on a baking tray. Pour in the oil until the meat is just covered.
To braise in the oven
Approx. 3 hrs. in the lower half of the preheated oven. Remove the jars, remove the meat from the oil, serve with the olives and garlic.