Turn to ashes in (one's) mouth verb phrase
Become or turn to a bitter disappointment or worthlessness
Her dream of being a singer would turn to ashes in her mouth, if she failed to win in this competition.
The joy of easing social distancing measures will turn to ashes in everyone's mouth If the number of locally transmitted cases rises.
The hope that he will be found alive turned to ashes in his wife's mouth when all effort of finding ended up in nothing.
The verb " turn" must be conjugated according to its tense.
This term refers to the Dead Sea fruit, a mythical fruit that seemed to be tasty but transformed to smoke and ashes when eaten. The fruit is mentioned in the Travels of John de Mandeville, a 14th-century scholar.
Used to indicate that it is very easy to guess something
No prizes for guessing what Steven is thinking.