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Yeast rehydration nutrient for challenging conditions; OMRI listed

Go-Ferm Protect Evolution® is the latest generation of natural yeast rehydration nutrients with improved sterol content (quality and quantity) together with micronutrients which help to increase yeast cell viability and vitality. This third generation formulation improves yeast stress tolerance and enhances fermentation security (especially in difficult conditions) and helps with aromtics.

Difficult conditions may include overripe fruit, marginal fruit quality (poorly developed fruit, Botrytis, molds, high bacteria count), insecticide or fungicide residue, low nutrient levels, or over-clarified juice. It is especially useful in white and rosé fermentations when oxygen additions are difficult. The enhanced sterol content can replace the second oxygen addition recommended at ⅓ sugar depletion. Go-Ferm Protect Evolution provides a combination of protective and nutritive benefits for optimal fermentation and sensory results. 

Recommended Dosage 30 g/hL 2.5 lb/1000 gal 

Note: This recommendation is based on a yeast inoculum of 2 lb/1000 gallons (25 g/hL). If using more or less yeast, respect the ratio of 1 part yeast to 1.25 Go-Ferm Protect Evolution.


1. Mix Go-Ferm Protect Evolution in 20 times its weight in clean 43°C(110°F) water. For every 1 kg(2.2 lb) Go-Ferm Protect Evolution, use approximately 5 gallons (20 L) of water.

2. Let the mixture cool to 40°C(104°F) then add the selected active dried yeast.

3. Let stand for 20 minutes.

4. Slowly (over 5 minutes) add equal amounts of must/juice to be fermented to the yeast slurry. Do not allow more than 10°C(18°F) difference. Atemperate as necessary (see page 7 for more details).



Dated expiration. Store in a cool and dry environment at 18°C(65°F). Once opened, keep tightly sealed and dry.

Note: Due to the unique nature of Go-Ferm and Go-Ferm Protect Evolution, they will not go into solution completely. This is due to the fatty acid and sterol content and is to be expected.