jam tomorrow - definition and synonyms

phrase British
  1. something good that someone promises you but that never seems to happen

    The team’s supporters are tired of being promised jam tomorrow.

Word story
The phrase ’jam tomorrow’ was coined by Lewis Carroll in his children’s story Through the Looking Glass. The White Queen tells Alice: ’The rule is, jam to-morrow and jam yesterday – but never jam to-day’.
See also main entry: jam