Topic is a chocolate bar made by Mars, Incorporated in France and sold throughout Europe. It contains hazelnuts, nougat and caramel.
The chocolate bar was promoted in a series of radio advertisements broadcast in 2002 with the strapline “A joy to eat, but a bitch to make”. These adverts featured actors Simon Pegg and Mark Heap who both appeared in the cult British TV comedy Spaced.
The Topic was removed from boxes of Celebrations in 2006, along with Twix. It has been speculated that the Topic was the least popular chocolate in the box, although others believe that its withdrawal was down to its similarity to the Snickers bar.