Piña colada was a beverage from Earth.
Sally Morgan's military parents always made them when returning home on leave. Hex promised Sally "the largest Piña colada she'd ever seen". (AUDIO: Black and White [+]Loading...["Black and White (audio story)"])
According to Ianto Jones, Gwen Cooper was "up to her neck in piña coladas" when she visited Tenerife. (AUDIO: Expectant [+]Loading...["Expectant (audio story)"])