Multiple realities
(covers information from several alternate timelines)

Blackened redfish was a Creole dish. It was once prepared and served at a banquet by Benjamin Sisko for his senior staff. Sisko learned this recipe, among others, from his father's restaurant in New Orleans. (DS9: "Equilibrium")

In an alternate timeline, Jake Sisko and his wife Korena enjoyed blackened redfish. (DS9: "The Visitor")

The Star Trek Encyclopedia (4th ed., vol. 1, p. 87) identified the redfish as a varity of fish native to the bayous of Louisiana.
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