Pizzaiolo Sal Lupoli, of Boston-area fleet Sal’s Pizza, opened Revolving Test Kitchen in Lawrence, Mass. last December. The first occupant, CocoRay’s, is a former food truck headed by local chef Ray Gonzalez. All Revolving tenants receive nearly $300,000 of equipment and furniture during their six-month stints, as well as mentoring from Lupoli. His aim is to help launch food businesses that will revitalize empty storefronts in downtown Lawrence.