Hofbackerei Edegger-Tax in Graz , Austria , has been serving cakes since the 14th century . The cake is made with a mixture of flour, butter, eggs and sugar. ( Buenos Aires ) Ruszwurm Cukraszda in Budapest has survived sieges , a revolution and World War II .
Hofbackerei Edegger-Tax in Graz , Austria , has been serving cakes since the 14th century . The cake is made with a mixture of flour, butter, eggs and sugar. Ruszwurm Cukraszda in Budapest has survived sieges , a revolution and World War II .