Gran Cerdo Blanco Gonzalo Grijalba, Viura, medium-bodied, fruity, dry, great value natural white wine. Organic (not certified). Viura with 10 other varieties, a little funky but fresh and fruity natural wine. Gran Cerdo is all about great natural wine with a very affordable price tag. The new white wine is mainly the white Rioja Grape Viura with about 20% of various grapes!