Demoiselles is a southwest France speciality, with a pretty name that means ‘young ladies’ (as in Picasso’s revolutionary Demoiselles d’Avignon, although the young ladies in that painting were prostitutes on Carrer d'Avinyó in Barcelona).
Down in southwest France, demoiselles are carcasses of fattened ducks grilled on a wood fire, for messy picking and sucking the meat off the bones. You’re far more likely to see them on special occasions (summer fêtes etc) than on a restaurant menu.
Image by exidieul