Flemish Ale Yeast Blend | White Labs WLP665 Yeast
If this yeast is on sale at 40% off, it’s likely nearing its expiration date—but don’t worry! It’s still highly viable and a great way to save on your brew.
Yeast Specifications:
- Manufacturer: White Labs
- Yeast Type:
- Attenuation:
- Flocculation:
- Temperature:
White Labs WLP665 Flemish Ale Yeast Blend: Complex Belgian-Style Sours
Produce Deep, Layered Acidity with a Traditional Mixed Culture
White Labs WLP665 Flemish Ale Yeast Blend is a classic mixed culture designed to craft complex Belgian-style sours like Flanders Red and Oud Bruin. This blend includes a combination of Saccharomyces, Brettanomyces, Lactobacillus, and Pediococcus to deliver rich acidity, barnyard funk, and long-lasting depth through extended aging. Expect a slow and evolving fermentation—perfect for brewers who value patience and character in their beer.
Key Characteristics:
- Attenuation: 70% – 80%
- Flocculation: Low
- Alcohol Tolerance: Medium (8–12%)
- Fermentation Temperature Range: 68°F – 80°F (20°C – 27°C)
- Culture Type: Mixed culture (Yeast + LAB + Brett)
Ideal for Brewing:
- Flanders Red
- Oud Bruin
- Barrel-Aged Sours
Why Choose WLP665 Flemish Ale Yeast Blend?
- Balanced Mixed Culture: Includes Brett, Lacto, and Pedio for complexity and controlled acidity.
- Authentic Flemish Profile: Delivers signature tartness, dark fruit character, and gentle funk.
- Ideal for Aging: Designed for extended conditioning or blending post-ferment.
Enhance Your Brewing Process
Pair WLP665 with White Labs Brewzyme to reduce diacetyl during long-term fermentations. For healthy fermentation kinetics, add White Labs Zinc Buddy to support yeast and bacteria throughout the aging cycle.
Our Commitment to Yeast Health
At SoCal Brewing Supply, we take yeast storage and viability very seriously. We ensure yeast is always stored under optimal conditions, with 24-hour monitoring of refrigerator temperatures to prevent spikes that could negatively impact yeast health.
For liquid yeast orders, we recommend shipping with an ice pack and insulated envelope to ensure your yeast arrives in top condition. It's normal for ice packs to melt during transit; their purpose is to protect the yeast from extreme temperatures caused by external weather conditions.
If you like this yeast or want to view other White Labs yeast strains, check out our entire selection of White Labs Yeasts here.
Brew bold, barrel-worthy Belgian sours with White Labs WLP665 Flemish Ale Yeast Blend.