Nightcap (drink)
From Tardis Wiki, the free Doctor Who reference
Jack Harkness once enjoyed a nightcap before bed on Earth in 200,100. He poured the alcohol from a container with a cork stopper. (AUDIO: The Year After I Died)
The Third Doctor offered Jo Grant a nightcap one night while they were visiting Liz Shaw at Cambridge. She accepted, and he poured her drink. (AUDIO: Primord)