It turns out that Bottle Logic Brewing’s extremely popular Fundamental Observation has a bigger brother, and it features the largest ABV of any beer in the brewery’s history.

The Anaheim, Calif.-based brewery has announced it will be releasing Fundamental Theorem, a 20.59 percent ABV “colossal, bourbon-soaked ” imperial stout that was aged in four successive sets of bourbon barrels over a two year period before being conditioned on a blend of both Madagascar and Tahitian vanilla beans. According to the Anaheim, Calif.-based brewery, the base beer was “a small reservation of the best tasting barrels from the third batch of Fundamental Observation.”

Fundamental Theorem is a member of Bottle Logic’s Stasis Project Series, which “celebrates the barrel as a fifth ingredient” and includes other notables such as Space Trace 2018 (13.6 percent ABV), Ground State 2018 (12.89 percent ABV) and The Lost Colony 2018 (12.5 percent ABV.)

The imperial stout joins two other variants of Bottle Logic’s Fundamental ObservationFundamental Forces, a 16.2 percent ABV imperial stout conditioned on Tahitian vanilla beans and aged in bourbon barrels for 16 months that was released in March 2017; and Fundamental Summation, a 13.8 percent ABV imperial stout conditioned on Jamaican Blue Mountain coffee beans sourced from Mostra Coffee as well as vanilla beans before aged in bourbon barrels that was released in May 2017.

According to Bottle Logic, Fundamental Theorem will be packaged in 500ml bottles ($35.95) and will have a one bottle per person purchase limit. Interested parties will have the chance to order tickets redeemable for bottles on March 17 via an Eventbrite page that will be announced this weekend and bottle pickups will start March 24 with no proxies will be allowed.