Chop the chicken in medium-sized pieces and plunge it into water containing a handful of salt. Let it soak for 4 hours, take it out and remove the skin. Fry the chicken in olive oil until brown. Then place it in a pot with the olive oil, the quartered onion, lemon juice, oregano, some salt and cover it with water. Boil the chicken, until only the olive oil remains in the pot.