Xiqai was an Orion foodstuff. Based on some descriptions, xiqai seemed to be an aphrodisiac sort of spice. In 23rd century Federation history, Orion spices were the subject of rumor, innuendo, and folklore about source and effect on those who consume them. In the year 2376, Elias Vaughn told a story of a group of tribbles who had found themselves on a freighter full of xiqai. (DS9 - Worlds of DS9 novel: Bajor: Fragments and Omens)