With a name like Lake Monster, a business is almost mandated to host a Halloween party. And over the years, this St. Paul brewer hasn’t disappointed. This weekend, the crew will be celebrating the season with beer and spooks. Eight cask infusions will be tapped this day, including a raspberry sour with hibiscus, a double chocolate pastry stout, a double-dry hopped St. Paul Ale with East Kent Goldings (a beloved variety of English hop), and an Empty Rowboat IPA with jalapeño. They’ll also be debuting the impossibly fall-sounding Maple Bourbon Imperial Oatmeal Stout. Come sporting your Halloween finest; prizes will be awarded to the best individual and group costumes. Food trucks at the party will include Med Box Grill, La Tapatia MN, the Herbivorous Butcher, and Pretty Great Cheesecake. The music lineup features sets from the synth-fueled Graveyard Club, rockers the Bad Man, electronic trio Apollo Cobra, folk rockers Gentleman Speaker, and DJ Manny Duke. All ages.