For a small inoffensive treat, Jaffa Cakes can cause a lot of debate. Should you eat it all in one or nibble off the edge before the jelly? These are questions asked in households across the UK, and while theses questions may always remain a mystery, McVitie's amazed fans in 2020 by putting an end to one debate. The Edinburgh-biscuit company revealed the chocolate is actually on the bottom of the Jaffa Cake, contrary to popular belief. In a screenshot of a Twitter conservation shared widely on UK Facebook groups, McVitie's appeared to have confirmed that chocolate is at the bottom of a Jaffa Cake UK social media user known as David claimed to have asked the Jaffa Cake team to confirm which side of the treat is the top via Facebook Messenger.

A physicist has used the power of artificial intelligence (AI) to solve the age-old debate about whether Jaffa Cakes are biscuits or cakes. Dr. Héloïse Stevance, an astrophysicist at the University of Auckland in New Zealand, trained algorithms with nearly 100 recipes of traditional cakes and biscuits. She then ran two Jaffa Cakes recipes through the algorithms, which recognised them unambiguously as cakes'without a doubt'. Jaffa Cakes, which are made by Edinburgh-based manufacturer McVitie's, consist of a disc of orange-flavoured jelly, milk chocolate and a mysterious spongy base. But fans of the popular British snack have passionately debated whether they're biscuits or cakes due to their unique texture and appearance.

The debate over which biscuit is best for dunking normally comes down to a matter of personal taste. But the more practical question of which can soak up the most tea without crumbling into the cup has been subjected to the more exacting scrutiny of science. Ten types of biscuit, ranging from Fortnum & Mason pistachio and clotted cream to children's favourite Fox's Party Rings, were dunked to see how long each lasted before losing'structural integrity' – science speak for how long before they crumbled. In a separate test, the amount of tea each could absorb in 15 seconds was measured. The winner was the McVitie's Rich Tea with nine points out of a maximum ten – holding together for an impressive ten minutes before starting to disintegrate, according to Wired.