Oud Vat Brett | White Labs WLP4642 Yeast | Vault Strain
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White Labs WLP4642 Oud Vat Brett: Vault-Exclusive Brettanomyces for Complex, Funky Fermentations
Craft Traditional Wild Ales with Authentic Brett Character
White Labs WLP4642 Oud Vat Brett is a Vault strain of Brettanomyces sourced from a historic Belgian barrel-aged sour beer. Known for its layered funk, mild tartness, and rustic character, this yeast delivers earthy, fruity, and slightly smoky notes that develop and evolve over time in the bottle or barrel. WLP4642 is best suited for long-term aging and secondary fermentation in mixed fermentation beers such as Lambic, Gueuze, and Oud Bruin. It adds complexity and depth that are hallmarks of classic wild ales.
Key Characteristics:
- Attenuation: 80% – 90%
- Flocculation: Low
- Alcohol Tolerance: High (up to ~12%)
- Fermentation Temperature Range: 70°F – 85°F (21°C – 29°C)
- STA1 Status: Positive
Ideal for Brewing:
- Lambic
- Gueuze
- Oud Bruin
- Flanders Red
- Mixed Fermentation Sours
Why Choose WLP4642 Oud Vat Brett?
- Rare Vault Strain: Limited-time availability from White Labs’ exclusive Vault collection.
- Layered Brett Complexity: Contributes traditional funk, earthy tones, and subtle tartness.
- Perfect for Aging: Ideal for beers that benefit from extended secondary fermentation and cellaring.
Enhance Your Brewing Process
Boost fermentation health by pairing WLP4642 with White Labs Brewzyme to minimize diacetyl and White Labs Zinc Buddy for optimal yeast nutrition throughout conditioning.
Our Commitment to Yeast Health
All White Labs yeasts are stored in temperature-controlled refrigerators with 24/7 monitoring at SoCal Brewing Supply. We recommend adding an ice pack and insulated mailer during warmer months to help preserve yeast viability in transit. Melted packs are expected and still help reduce temperature spikes.
Explore our full White Labs yeast collection here for even more professional-grade strains.
Use WLP4642 Oud Vat Brett to bring classic Belgian funk and aged character into your next sour or wild ale project.