Tart of Darkness is a sour stout aged in oak. Brewed to resemble a stout at its foundation, the journey into tartness begins with fermentation in large oak puncheons at Bruery Terreux, where it’s treated to a special blend of souring bacteria and wild yeast cultures. Following a slow but wildly active fermentation, the beer is transferred for extended aging into a dedicated collection of used oak barrels for Tart of Darkness. This includes emptied bourbon barrels from The Bruery that previously held beers such as Black Tuesday®. This special edition was aged with black currants, imparting ripe, jammy notes to our awesomely dark and roasty sour stout.