From Brooklyn:

Take Ocean Parkway into the Prospect Expressway.  The Prospect Expressway turns into the Gowanas Expressway.  Take the Gowanas to the Brooklyn Battery Tunnel and bear left when exiting the tunnel follow the signs to the FDR drive.  Take the FDR North to the Houston Street (Exit #5) make a left onto Houston Street proceed straight and make a left on Ridge Street.  Castellano is on the right hand side of the street in the middle of the block.