B3 is a strong brandy distilled in the Rhetor system from blue bilva, a fruit indigenous to Reisse (Rhetor III). In SEY 2733, a group of students at the University of Mentor on Mentor (Rhetor IV) used a bushel of blue bilva as the basis for an experimental homemade spirit. The concoction, which retained a sweet flavor profile along with a powerful alcoholic punch, was a hit at their next party.
Blue bilva brandy continued as a student-made spirit enjoyed by locals until 2872, when the drink was smuggled to the University of Rhetor on Reisse and it underwent a surge in popularity. Following this increase in demand, three University of Mentor students started the Blue Bilva Brandy company in 2875, with B3 as their flagship beverage.