Something sweet is percolating at a familiar landmark in Middletown.
The Sweet Meltdown Bakery & Coffee — named as a nod to nearby Three Mile Island — will open this summer at Cahoot’s Taproom & Arcade at the former Tattered Flag Brewery at 1 S. Union St.
Partners Alex Costik and Bethany Vaudrin are opening Sweet Meltdown, which aims to fill a void in the town: a coffee house…