Rub the chicken with the lime or lemon, rinse and pat dry. Mix together the salt, allspice, black pepper, jerk seasoning, vinegar, thyme and garlic, and press into the chicken. Leave to marinate for at least 3 hours.
Melt the butter or margarine in a saucepan, add the guava jelly and, when mixture begins to bubble, add the chicken, turning until brown.
In another saucepan, heat