Yeast
GRÜNBERGER
Red Wine Yeast
Active dried yeast for classic red wines.
At a glance
Key characteristics
- Yeast strain: Saccharomyces cerevisiae
- Emulsifier: sorbitan monostearate
- Yield: 10–50 L batch
Application and action
Body and bouquet in red wine
This strain supports full-bodied red wines and may help harmonise batches made from fruit with high acidity or bitterness. Its temperature range and alcohol tolerance promote a steady fermentation.
Key information
Product specifications
- Brand
- Grünberger
- Type
- active dried red wine yeast
- Yeast strain
- Saccharomyces cerevisiae
- Emulsifier
- sorbitan monostearate
- Yield
- 10–50 L batch
- Alcohol tolerance
- up to 17%
- Fermentation temperature
- 12–32 °C
- Primary fermentation
- 10 g per 10–50 L
- Fermentation restart
- 10–20 g per 10–50 L
Refer to the current product packaging for the binding dosage, application and safety information.
Prepare the water
Boil 200 mL of water and allow it to cool to 30–35 °C. Use 100 mL of water for each 10 g of yeast.
Rehydrate the yeast
Add a pinch of yeast nutrient and the entire portion of yeast. Stir until fully dispersed, leave for 20 minutes and stir again after 10 minutes.
Add sugar
After 20 minutes, stir in one teaspoon of sugar until dissolved and wait for a clearly visible layer of foam.
Acclimatise the yeast
Add a small amount of must and leave approximately 1 cm of headspace for the foam.
Practical note
Adding to the batch
After adding the must, clear foaming will normally appear within 20–60 minutes. Add the active yeast starter to the fermenter. The temperature difference between the batch and the starter must not exceed 5 °C.
Practical note
Direct addition
Adding the yeast without rehydration does not provide optimum acclimatisation conditions and may result in delayed, weak or incomplete fermentation.
Storage
Storage conditions
Store in a dry, cool place at no more than 20 °C, preferably refrigerated. Use the entire contents after opening. Check the best-before date and batch number on the packaging. For oenological use only; not intended for direct consumption.
Product and trade enquiries
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