The thick alcoholic drink favoured by Cardassians, served in distinctive spiral bottles and seen from The Wounded through to Legate Damar's heavy drinking during the Dominion War.
Kanar is the national drink of Cardassia, a syrupy spirit that comes in several colours and vintages. It is first mentioned in the Next Generation episode The Wounded, when a Cardassian officer in Ten Forward tries to make conversation with Miles O'Brien, who replies that he never cared for it.
In Deep Space Nine it is everywhere that Cardassians are. Quark keeps it behind the bar, Garak is a connoisseur, and Dukat pours it for guests he wishes to impress or seduce.
The drink is used to chart the decline of Damar. Installed as leader of Cardassia under the Dominion, he spends much of the final two seasons with a glass in his hand, and his decision to stop drinking marks the moment he resolves to rebel.