bathtub gin vs brandy

bathtub gin

noun
  • Gin or a similar alcoholic beverage which is of very poor quality, as if made by a homebrewer in a bathtub. 

brandy

noun
  • An alcoholic liquor distilled from wine or fermented fruit juice. 

  • A glass of brandy. 

  • Any variety of brandy. 

verb
  • To preserve, flavour, or mix with brandy. 

How often have the words bathtub gin and brandy occurred in a corpus of books? (source: Google Ngram Viewer )