Left-right: Sam Garbrielli, Greg Graziano, Fred Nickel, Casey Hartlip, Sally Ottoson, Bob Swain, and Dennis Patton. Eight Mendocino County wineries have created a group called Coro (chorus in Spanish and Italian), which like the French and Italians, Coro has established rules blending and aging wines that will carry the Coro label. There are seven winemakers (one works for two labels). Event on 5/21/04 in Hopland. Craig Lee / The Chronicle Photo: Craig Lee