Fermentis SafŒno™ CK S102

SafŒno™ CK S102 Wine Yeast

Unlock intense fruit expression and vibrant aromatics with SafŒno™ CK S102, a premium wine yeast originally selected in France's Loire Valley from Sauvignon Blanc fermentations. Specifically chosen for its ability to maximise aromatic intensity, this strain excels at producing expressive white and rosé wines, even under challenging winemaking conditions.
SafŒno™ CK S102 is renowned for enhancing fruity thiols and ester production, helping winemakers create wines bursting with citrus, tropical fruit, passion fruit, grapefruit, and fresh floral notes. Whether working with highly aromatic grape varieties or more neutral cultivars, this versatile strain helps reveal exceptional fruit character and freshness.

Quick Overview

• Premium yeast for aromatic white and rosé wines
• Intensifies tropical fruit and citrus aromas
• Excellent for Sauvignon Blanc and aromatic varieties
• Enhances neutral grape varieties
• Fast and reliable fermentation
• Alcohol tolerance up to 15% ABV
• Performs well at low fermentation temperatures
• Suitable for home and commercial winemaking

Product Profile
Product Type: Active Dry Wine Yeast
Strain: SafŒno™ CK S102
Suitable For: White & Rosé Wines
Alcohol Tolerance: Up to 15% ABV
Fermentation Temperature: 10–30°C
Low Temperature Capability: Down to 8–10°C
Fermentation Speed: Very Fast
Thiol Release: High
Ester Production: High
Nitrogen Requirement: High
Acidity Retention: Good

What Makes CK S102 Special?
SafŒno™ CK S102 was selected specifically for its ability to increase aromatic intensity in wines.
Its unique metabolism promotes:

• Grapefruit aromas
• Passion fruit notes
• Tropical fruit character
• Citrus flavours
• Floral complexity
• Freshness and vibrancy

The strain has a particularly strong ability to release and convert aromatic thiols, helping create highly expressive wines with remarkable fruit intensity.

Ideal Grape Varieties

SafŒno™ CK S102 performs exceptionally well with:

Aromatic Varieties

• Sauvignon Blanc
• Colombard
• Riesling
• Gewürztraminer
• Grenache Rosé
• Syrah Rosé

Neutral Varieties

• Chardonnay
• Sémillon
• Ugni Blanc

For neutral grape varieties, the strain's strong ester production can significantly enhance fruit expression and complexity.

Flavour & Aroma Contribution
Expect enhanced aromas and flavours of:

• Passion fruit
• Grapefruit
• Citrus
• Tropical fruits
• White fruits
• Floral notes

Supported by:

• Fresh acidity
• Clean fermentation profile
• Long aromatic persistence
• Bright fruit intensity

Home Winemaking Dosage
Recommended Dosage
Use:

• 0.2g per litre
• 2g per 10 litres
• 4g per 20 litres
• 4.6g per 23 litres
• 5g per 25 litres

For most home winemaking batches between 20–25 litres, approximately 5g of yeast is recommended.

Fermentation Performance
SafŒno™ CK S102 offers:

• Excellent implantation ability
• Killer positive strain
• Very fast fermentation kinetics
• Reliable completion of fermentation
• Strong aromatic expression
• Good performance in highly clarified musts

It performs particularly well when sufficient yeast nutrients are available.

Nutrition Requirements
Unlike some wine yeast strains, CK S102 benefits from strong nitrogen availability.
For best aromatic performance:

• Ensure adequate yeast assimilable nitrogen (YAN)
• Consider yeast nutrients where required
• Maintain healthy fermentation conditions

Proper nutrition helps maximise fruit expression while reducing the risk of unwanted sulphury aromas.

How To Use
Direct Pitch Method
SafŒno™ CK S102 can be added directly to the must.

• Sprinkle the yeast evenly into the must
• Mix thoroughly
• Ensure even distribution throughout the batch
• Ferment within the recommended temperature range

Rehydration Method
For traditional preparation:

• Rehydrate in 10 times its weight of water
• Use clean water between 15–37°C
• Leave for approximately 20 minutes
• Stir gently
• Add to the must and homogenise thoroughly

Fermentation Guidance
For maximum aromatic expression:

• Ferment between 10–30°C
• Low-temperature fermentation is possible
• Maintain good nutrient availability
• Monitor fermentation health closely
• Avoid excessive copper-treated fruit

The strain is particularly effective when used in fresh, aromatic wine styles.

Perfect For Winemakers Who

• 
  
  Produce Sauvignon Blanc
  Make aromatic white wines
  Produce fruit-forward rosés
  Want maximum aroma intensity
  Work with Chardonnay or Sémillon
  Seek vibrant tropical fruit character
  Frequently Asked Questions
  What wines is CK S102 best suited for?
  
  It is ideal for aromatic white and rosé wines where intense fruit expression and freshness are desired.
  
  Can it enhance neutral grape varieties?
  
  Yes. One of its strengths is boosting fruit intensity in varieties such as Chardonnay, Sémillon, and Ugni Blanc.
  
  What aromas does it promote?
  
  The strain enhances grapefruit, passion fruit, tropical fruit, citrus, floral, and fresh fruit aromas.
  
  Can I use this for home winemaking?
  
  Yes. It performs exceptionally well in both commercial wineries and home winemaking batches.
  
  Does it need rehydration?
  
  No. Like other E2U™ strains, it can be pitched directly into the must, although rehydration remains an option.
  
  What alcohol level can it achieve?
  
  SafŒno™ CK S102 can ferment wines up to approximately 15% ABV under suitable conditions.
  
  Why Choose SafŒno™ CK S102?
  
  SafŒno™ CK S102 is an outstanding choice for winemakers seeking highly aromatic white and rosé wines with vibrant fruit character and freshness.
  
  Its ability to intensify thiol and ester expression makes it particularly valuable for Sauvignon Blanc and other aromatic varieties, while also bringing impressive fruit intensity to traditionally neutral grape varieties.