WLP066 London Fog Ale Yeast is a favorite for hazy and juicy IPAs, built to deliver expressive hop-friendly fermentation character while keeping the finish smooth and approachable. It produces bright tropical and citrus aromatics – commonly perceived as pineapple and grapefruit – and leaves a touch of residual sweetness that helps round out bitterness and support a soft, velvety mouthfeel.

London Fog is designed to complement modern hopping techniques. In hazy IPA and juicy pale ale recipes, it can enhance the perception of fruit-forward hop aroma, while its low to medium flocculation helps maintain the signature haze and pillowy texture many brewers want. The result is a balanced beer where hop intensity pops, but the body stays soft and the finish remains clean and drinkable.

Highlights

• Tropical fruit and citrus-forward profile
• Residual sweetness enhances mouthfeel and balance
• The top choice for hazy and juicy IPAs
• Low to medium flocculation helps maintain haze and a soft, full texture
• Available in Liquid and Dry (gluten-free) formats
• PurePitch® Next Generation packaging for consistent, reliable pitching

Brewing Notes

• For classic hazy character, pair with high-protein grists (for example, oats and/or wheat) and focus on late hopping and dry hopping to emphasize aroma over bitterness.
• Temperature influences expression: fermenting toward the warmer end of the range can amplify fruity character, while the cooler end can be a bit cleaner and more restrained.
• Low to medium flocculation means it may stay in suspension – cold crashing can help settle yeast if you want a brighter pour, but many hazy styles benefit from minimal clarification.
• For dry hopping, good oxygen control (closed transfers, purging vessels) helps preserve bright hop aroma and reduces the risk of oxidation in hazy beers.

Storage and Handling

• Store refrigerated until use.
• Allow the pouch to warm toward fermentation temperature before pitching to reduce temperature shock.
• Use a starter and/or increased pitch rate for higher-gravity worts when appropriate for your process.
• If using the dry format, follow standard dry yeast rehydration or direct-pitch practices based on your preferred process.

Tech Specs

• Attenuation: 75-82%
• Flocculation: Low-Medium
• Alcohol Tolerance: 5-10%
• Fermentation Temp: 64-72°F (18-22°C)
• STA1: Negative
• Popular Styles: Hazy/Juicy IPA, Pale Ale, Blonde Ale, Brown Ale, Double IPA, English Bitter, Scotch Ale, Porter, Stout, Barleywine, Imperial Stout