Massachusetts is set to host the largest pizza festival in New England next month. According to a Patch of Boston report, more than 30 pizzerias are expected to participate, serving slices to more than 20,000 guests. Raffaele Russo of Quattro — ranked by organizers as the world's sixth-best pizza maker — will participate. Advance admission is $10 and includes entry to the festival plus two pizza slices. Admission will increase to $15 when tickets are purchased during the festival weekend.