Cuca é um doce, de origem alemã e o nome vem de kuchen, que significa bolo. A cuca é feita à base de massa de pão ou de bolo, é muito apreciada e consumida na região sul do Brasil.
Kuchen, (pronounced: IPA: /kʰuxɛn/phonics: /coo-hen/) the German word for cake, is used in other languages as the name for several different types of sweet desserts, pastries, and gateaux. The term itself may cover as many distinct desserts as its English counterpart "cake."
Kuchen desserts are presumably handed down from people of German heritage and as such are often popular in many areas of German settlement in the United States, particularly North Dakota, South Dakota, Indiana, Minnesota, and Wisconsin. Kuchen was introduced into the Chilean cuisine when German immigrants settled southern Chile in the 1850s. Kuchens in Chile usually have fruits, such as apples, strawberries or murtas. Nontraditional Chilean kuchen with walnuts are sometimes offered. Now kuchens are found in in many Chilean bakeries and in many of the larger "hipermercados" which is the local name for large supermarkets (a "supermercado," on the other hand, is often little more than corner store with limited offerings and usually would not carry kuchen). In Brazil, it is called "cuca" or less common "cuque" and it is found in areas of German settlement, like Rio Grande do Sul, Paraná and Santa Catarina states.
Fontes: Wikipédia e Centro Cultural 25 de Julho.