Complex sentence: The Danish pastry is said to originate from Vienna and in Denmark is called "wienerbrød" (Viennese bread), probably because it uses a certain kind of dough consisting of butter and flour in the classic cuisine referred to as "Viennese Dough".
Split into simpler sentences: The Danish pastry is said to originate from Vienna and in Denmark is called "wienerbrød" (Viennese bread). But that is probably because it uses a certain kind of dough consisting of butter and flour in the classic cuisine referred to as "Viennese Dough".