[4] One of the advertising campaigns for Caramilk bars revolved around the question of how the centre of the confection was put into the chocolate flavoured exterior.

One notable advertisement involved two cone head aliens who were complimenting each other on successfully concealing the secret from humans, and also creating some of earth's other long-standing works of wonder (e.g. the pyramids).

Another ad, featuring Leonardo da Vinci drawing the Mona Lisa as she eats a Caramilk, has won a Clio award.

[5][6] In the United Kingdom and the Republic of Ireland, a bar similar in premise (caramel-filled chocolate) but differing slightly in taste, shape, ingredients and packaging is sold as Cadbury Dairy Milk Caramel.

[7] In the United States, a similar bar (which has been produced under license by The Hershey Company since 1988) is sold under the brand Cadbury's Caramello.