Is it ensure, insure, or assure?
soup, 1640s, bisk, from French bisque "crayfish soup" (17c.), said to be an altered form of Biscaye "Biscay." Gamillscheg says: "Volkstümliche Entlehnung aus norm. bisque 'schlechtes Getränk.'" Modern form in English from 1731.
"unglazed porcelain," 1660s, alteration of biscuit.