Among Vienna’s more notable cultural exports—up there with psychoanalysis, waltzes, and Klimt—is a cake.

The Sacher torte is a decadent affair, spongy on the inside, principally made from chocolate, often served with a dollop of unsweetened schlag. Lore has it that the torte was first whipped up in 1832 at the height of Hapsburg hegemony over Europe for Count Metternich, whose chef invented a cake that was coated and sealed with apricot jam and a hard chocolate shell, which preserved it, allowing it to be shipped great distances without spoiling.