Lingua de gato

A cat tongue is a small biscuit or chocolate bar available in a number of European, Asian, and South American countries. The name comes from the fact that the biscuits are long and flat, somewhat like a cat's tongue. They are known locally as kočičí jazýčky (Czech), Kattentong (Dutch), kocie języczki (Polish), langue de chat (French), Katzenzungen (German), lingua di gatto (Italian), língua de gato (Portuguese), macskanyelv (Hungarian), lengua or lengua de gato (Spanish), limbă de pisică (Romanian) or lidah kucing (Indonesian). Cat's tongue cookies are sweet and crunchy. The original recipe most likely comes from 17th century France. They are produced from egg white, wheat flour, sugar, butter (sometimes) and vanilla. They are baked in the oven until cooked. Additional ingredients may include chocolate, citrus, and spices.

Source: Wikipedia