Custard

Custard is a yellow dairy product which is consumed on Earth.

Shortly after his regeneration, a hungry Doctor couldn't find any food palatable except custard with fish fingers dipped into it, a dish he called "fish custard." (DW: The Eleventh Hour)

Whilst on the 'Crooked World' the Doctor deliberately imagined (and therefore created) a custard pie gun. (EDA: The Crooked World)