In Viana, there are minority varieties growing which are very typical of this privileged rioja zone which reflect the unique features of the terroir from which their grapes are sourced. Mazuelo is characterised as having an abundance of tannins, high acidity and a stable colour, making it well-suited for making wines for lengthy ageing. On the other hand, Graciano produces wines with marked acidity and a very particular aroma which are superior in intensity to the other Rioja varieties. Ondarre varietal wines which reflect their origin.