Delavian chocolate

From Memory Alpha, the free Star Trek reference

Delavian chocolates are a rare confection that both Julian Bashir and Elim Garak were fond of.

Garak had a special supplier that would provide him with Delavian chocolates. In 2371 Garak gave a small bar of Delavian chocolates as a gift to Bashir. He returned the chocolates to Garak a little later, when the Cardassian was leaving the station to search for Enabran Tain. Doctor Bashir thought that Garak needed them more. (DS9: "Improbable Cause")