Even though she shows up unannounced, Laurie Wentworth’s visits to area kitchens shouldn’t come as any big surprise to area restaurants. That’s because food safety inspectors are required to check conditions every six months — more if complaints are filed. “They are pop-in inspections,” said Dannella Burnett, owner of Oakwood Occasions, a catering and event-planning company, which operates the OO Cafe.