Chocolate bar components: cocoa solids, cocoa butter, sugar, and milk. The relative presence or absence of these define the subclasses of chocolate bar made of dark chocolate, milk chocolate, and white chocolate. In addition to these main ingredients a chocolate bar may contain flavorings such as vanilla and emulsifiers such as soy lecithin to alter its consistency. While vanilla is the most common flavouring, many other flavours are available, including mint, orange, and coffee. Chocolate bars containing other ingredients feature a wide variety of layerings or mixtures that include nuts, fruit, caramel, nougat, and fondant. A popular example is a Snickers bar,
Cigarettes and Chocolate Milk "Circuit 9". "Cigarettes and Chocolate Milk" appears on the soundtrack to the Italian film "Caos Calmo", as well as the following compilation albums: "" (2002), "107.1 KGSR Radio Austin - Broadcasts Vol.10" (2002), "" (2006), and "" (2008). The reprise version appears on the soundtrack to the film "The Last Kiss" (2006). It also appeared in the How I Met Your Mother season 5 episode "Last Cigarette Ever". On "Yellow Lounge: Compiled by Rufus Wainwright", a 2007 compilation album of Wainwright's favorite classical pieces, the Fauré Quartet performs instrumental versions of Wainwright's songs "Cigarettes and Chocolate Milk" and "Hometown Waltz".