
On the origin of her catchphrase "Azúcar"; from a 2000 interview quoted in “Celia Cruz, 77; Queen of Salsa’s Passing Marks the End of a Musical Era” https://www.latimes.com/archives/la-xpm-2003-jul-17-me-cruz17-story.html in Los Angeles Times (2003 Jul 17).
The quote is discussed in Why Did Celia Cruz Say, "Azúcar"? https://www.youtube.com/watch?v=ZaHb_ms1YkAWhy in the Smithsonian Music Channel.