They consist of a semi-soft stick of fondant, usually pink, and often extruded with a ridged cross-section in the shape of a star.
Their flavour and aroma is quite floral, and, as the name suggests, also reminiscent of the smell of musk.
The earliest known written reference is 1927 in the Australian Worker, which talks about the "pink curly musk sticks" from 25 years earlier, which were still available.
[1] Total sales are not tracked centrally, but supermarket chain Woolworths is reported as selling about 24 million musk sticks per year.
[2][3] ABC News said that "musk sticks manage to disgust tourists as much as they delight Australians",[1] and in October 2018, the Disgusting Food Museum in Malmo, Sweden included musk sticks.