B & B" (or Bénédictine and Brandy), which is Bénédictine diluted with brandy, making it less sweet than Bénédictine.
B & B was developed in the 1930s when consumers began a trend of mixing Bénédictine with brandy to produce a drier taste.
Bénédictine is 40% alcohol (80 proof), while B & B is 43% (86 proof).