The luscious chocolate and apricot torte is the stuff of legend in the grand, old world of Viennese coffeehouses. But which makes the tastiest?

I

’m on a tram on Vienna’s Ringstrasse as towering facades, columns, statues and domes drift past, each more ornate than the last. Here, the State Opera; there, the Austrian parliament, built in the Greek neoclassical style.

As I gawp, I shove cake in my mouth. After all, Vienna isn’t just the city of music, or lavish architecture. Thanks, in part, to its centuries-old coffeehouse culture, it’s also one of Europe’s finest pastry destinations. Cake (or more precisely, torte, kuchen or Mehlspeisen) has its own day here – “Sweet Friday”, the most delicious of Catholic customs, when meat dishes are replaced with sweets. I have been introduced to it via the medium of Marillenknödel – apricot dumplings.

It’s my first visit to Vienna, my boyfriend Wolfi’s home city. The priority is checking out the old neighbourhood and making a good first impression on his granny. Always keen to fit in, I have identified the national obsession and offered to test Austria’s most famous cake: Sachertorte.