cup of tea vs first choice

cup of tea

noun
  • Whatever suits or interests one. 

  • three 

  • Used other than figuratively or idiomatically: see cup, tea. A cup or mug with tea in it. 

first choice

noun
  • The most suitable and most optimal choice. 

  • The prime cut. 

  • The one with the highest ranking. 

How often have the words cup of tea and first choice occurred in a corpus of books? (source: Google Ngram Viewer )