Unrealistic expectation of high tea? (3,2,3,3)
I believe the answer is:
pie in the sky
This clue might be a double definition.
'unrealistic expectation' is the first definition.
The definition suggests a singular noun which matches the answer.
'high tea?' is the second definition.
Both the definition and answer are singular nouns.
Maybe they are linked in a way I don't understand?
'of' is the link.
Can you help me to learn more?
(Other definitions for pie in the sky that I've seen before include "Something that's desirable but not likely to happen" , "False optimism" , "Dream" , "Misleading promise" , "Jam tomorrow" .)