Amalgamation V Brettanomyces Blend | White Labs WLP4643 | Vault Strain
White Labs WLP4643 Amalgamation V for Fruity Brett Character and Long-Form Wild Beer Development
White Labs WLP4643 Amalgamation V is a White Labs Vault Brettanomyces blend for brewers who want high attenuation, evolving fruit character, and a flexible wild-fermentation culture that can be used in primary fermentation, extended aging, or bottle conditioning. White Labs describes this blend as a specialty Brett culture built around tropical and dark berry ester character with the ability to quickly add complexity in mixed-fermentation beer.
This blend is associated with roughly 85% to 90% attenuation, low to medium flocculation, and a fermentation range of 70 to 80°F. As a Vault strain, availability can be limited, which makes it especially attractive to brewers who want to use a more unusual Brett blend while it is available.
What White Labs WLP4643 Contributes to Beer
- Fruit-driven Brett profile: Tropical and dark berry notes layered over drying wild fermentation character
- Strong attenuation: Helps beer ferment dry and develop further over time
- Flexible process fit: Can be used in primary, during aging, or for bottle-conditioning complexity depending on your program
- Specialty release appeal: Useful for brewers looking to build unique wild and mixed-culture beer while the strain is available
White Labs WLP4643 Specifications
- Attenuation: 85% to 90%
- Flocculation: Low to Medium
- Alcohol tolerance: High
- Fermentation temperature: 70 to 80°F (21 to 27°C)
Best Uses for WLP4643 Amalgamation V
- Mixed fermentation ales
- Farmhouse ales
- Wild ales
- Brett-conditioned specialty beer
- Experimental fruit-forward wild beer projects
Why Brewers Choose Amalgamation V
This blend is useful when you want Brett complexity but also want a stronger fruit component than some earthier or more rustic blends deliver. It can fit well in projects where layered ester development is as important as dryness and funk.
Because Brett cultures continue to evolve, this blend is best used with packaging and aging plans that respect continued development over time.
Liquid Culture Storage and Shipping
We store liquid cultures in temperature-monitored refrigeration to help protect viability until shipment. Once the package is in transit, weather and carrier handling are outside our control, so customers should choose shipping protection based on route, season, and timing.
Expedited shipping, insulated packaging, and ice packs can help reduce liquid culture risk during warm-weather transit. Dry yeast is generally much less risky to ship than liquid cultures and liquid yeast.
Related Yeast and Brewing Resources
Browse our full range of White Labs strains for more Brett, wild, and standard fermentation options. You can also review our yeast shipping best practices page before ordering liquid cultures in warm weather.
If you want a fruit-forward Brett blend with strong attenuation and real aging potential, White Labs WLP4643 Amalgamation V is a strong specialty option while it is available.