Twin Oaks at the SDCVA Wine and Food Festival. By twinoaks In News on May 4, 2017Comments Offon Twin Oaks at the SDCVA Wine and Food Festival. Twin Oaks celebrated receiving their Tasting certification by pouring their most excellent wines at the San Diego County Vintners Wine & Food Festival. Malcoln & Michael Gray greet tasters. Michael & Kathryn Gray Malcom Gray, the Winemaker.