When the Dominion annexed the Cardassian Union, the people of Karemma aquired a taste for the drink. In 2380, the going price for a case of kanar is 200 ilecs or one bottle of Leyles ink. (TNG novel: Q & A)
During the Occupation of Bajor the Cardassians forced local Bajorans to distill kanar. Due to being made from locally sourced ingredients the result had a different flavor. Before the 2409 conference on Deep Space 9 regarding the threat posed by the Borg, Cardassian Ambassador Rugan Skyl requested a starship CO to find him a bottle in exchange for his support at the conference. (STO - "The 2800" mission: "Second Wave")
- Kanar article at Memory Alpha, the wiki for canon Star Trek.
- Kanar article at The Star Trek Online Wiki.