Dobos torte from Ruszwurm Cukraszda.
The Danube River divides Budapest into Buda and Pest, both sprinkled with famous pastry shops dating to the early 19th century. Buda is the older side, with views of the Danube from a picturesque hill; Pest is modern, hip, and cosmopolitan. A plethora of cukraszdas on both sides showcase extravagant and very traditional cakes in glass cases. You want to look at the entire case before you decide.