SATURDAY 10/26. 5 p.m. Lost Forty Brewing. $20.
Although we dare not begrudge anyone their pumpkin spice, their sweaters or their football (or, come to think of it, their leafy memes about all of the above), Lost Forty knows what autumn is really about: the yearly return of dark beers with ABV percentages that approach wine-like levels. One such beer is the reason for the season at Lost Forty’s annual Festival of Darkness — a limited release barrel-aged Imperial Stout called “Nighty Night,” with notes of black cherry, roasted coffee and cacao nibs that has been aged in barrels of rye whiskey, bourbon and red wine and has a staggering 10.5 percent ABV. (Butter up your designated driver in early October or arrange for a lift.) The zombie lumberjack that graces the beer’s packaging is both patron saint of the shindig and a template for what to wear: There’s a Zombie Lumberjack Costume Contest and cash prizes for best-dressed zombies. All of that happens to the soundtrack of sets from a few hometown heroes — rock ’n’ soul queens Dazz & Brie (above) and emcee/educator/wordsmith Big Piph. Food trucks will be on site, along with 20-plus partnering breweries pouring their best darks. Get tickets at Eventbrite.