"larks' tongues in aspic"
are birds of the family Alaudidae, having a sustained, melodious song. Larks have historically been considered wholesome, delicate, and light game. Lark's tongues were particularly highly valued. In modern times, shrinking habitats made lark meat rare and hard to come by, though it can still be found in restaurants in Italy and elsewhere in Southern Europe.
Aspic is a dish in which ingredients are set into a gelatine made from a meat stock or consommé.