Vitiferm Rubino Extra is completely organic. It is a low SO2 producer with a high alcohol tolerance and is a very fast fermenting strain.
Rubino Extra is a useful strain for restarting stuck fermentations, and will produce wines that promote varietal and terroir characteristics.
Due to its organic production process, the rehydration process of VitiFerm™ Rubino Extra is fundamentally different than other oenological yeasts. A 50/50 blend of juice and water is required for rehydration. Stir well during addition, with solution temperature between 30–32°C (86–89.6°F).