Barbecue sauce
From Tardis Wiki, the free Doctor Who reference
Barbecue sauce was a condiment. Torchwood Three used "kind of a barbecue sauce" to help their pet pterodactyl, Myfanwy, identify food. Jack Harkness sprayed some of this barbecue sauce on the partially cyber-converted Lisa Hallett. This attracted Myfanwy, who flew in and mauled Lisa, stopping her rampage in the the Hub. (TV: Cyberwoman)
