Since nuUhura ordered Cardassian Sunrise, they were known, but knowing their drink doesn't mean there was any official or direct contact. Ferengi might have brought it and sold it to the Federation territory.
__________________
In a Cardassian
library or in a Cardassian
gallery?
"Reagan, it appears, is really only an ardent unionist if the unions in question are in Poland" - Stephen King,
Skeleton Crew