White Labs Yeast | WLP001 California Ale Yeast® | PurePitch® | 150 Billion Cells
White Labs Yeast | WLP001 California Ale Yeast® | PurePitch® | 150 Billion Cells
White Labs Yeast | WLP001 California Ale Yeast® | PurePitch® | 150 Billion Cells

White Labs Yeast | WLP001 California Ale Yeast® | PurePitch® | 150 Billion Cells

$14.99
White Labs WLP001 California Ale Yeast® delivers clean fermentation, excellent attenuation, and enhanced hop expression for classic American beer styles.
  • Clean fermentation with excellent hop expression
  • High attenuation for a crisp, dry finish
  • 70 mL pouch treats a 5 gallon batch

Ice pack:

Ice Packs / Shipping:For best results, we strongly recommend adding an ice pack to your liquid yeast order. Ice packs do not guarantee that yeast will arrive cold, but will keep yeast colder for longer during transit. We can not replace yeast that arrives warm. In warm weather months, we highly encourage choosing dry yeast. Liquid yeast is final sale. As a live, perishable ingredient that requires refrigeration, we are unable to accept returns or exchanges once an order has left our warehouse.

Storage: Store in the fridge (33–38ºF). Do not freeze. Pitch cold - do not warm to room temp prior to pitching. Use within 4 months for direct pitching. For pouches older than 4 months, or that are warm, use a yeast starter to boost cell count.

Fermentation Temp Range
Each yeast strain has a temperature range where it performs best. Lagers require cooler temps, while Kveik yeasts can ferment in extreme heat. Maintaining the proper fermentation temperature for each yeast strain is crucial its health. Matching a yeast's ideal range to your environment (or your ability to control temp) is key to getting clean, consistent results.
Scale from 30°-120°F
Product Analysis
This typical analysis is not to be construed as product specification. Typical analysis represents average values, not to be considered as guarantees, expressed or implied, nor as a condition of sale.

Yeast Format, Liquid
Yeast Style, Ale
Flocculation, Medium
Attenuation, 73~85%
STA1, Negative
Fermentation Temperature Range, 64~73°F
Alcohol Tolerance, 5~10%

WLP001 California Ale Yeast® is White Labs’ flagship American ale strain, known for its clean, neutral character and reliable fermentation performance. It produces low ester levels, allowing hops and malt to remain at the forefront of the finished beer.

With attenuation ranging from 73–85% and medium flocculation, this strain creates dry, crisp finishes with strong clarity potential. Ferments best between 64–73°F and performs consistently across a wide range of gravities, including high-gravity beers.

WLP001 excels in American-style ales where clean fermentation and hop expression are priorities.

Ideal for:

• American IPA
• Pale Ale
• Blonde Ale
• Porter
• Stout
• Double IPA
• California Common

• Store refrigerated at 33–38°F
• Do not freeze
• Pitch cold into well-oxygenated wort
• Ferment between 64–73°F
• Use within 4 months for best viability
• Consider a starter for higher gravity beers or older pouches

Brewing Support, Anytime.

From step-by-step instructions to video tutorials and real human support - our brewing experts are just an email away.
Quality You Can Trust.

We use the same premium grains, hops & yeast trusted by the pros. No shortcuts. No substitutes. Just the good stuff.
The "We Got You" Guarantee.

We’re committed to your first batch being a great one. If something goes sideways, we’ll help you troubleshoot or replace what you need - fast.
White Labs Yeast | WLP001 California Ale Yeast® | PurePitch® | 150 Billion Cells
From $14.99

Frequently Asked Questions

WLP001 is known for its clean, neutral fermentation profile and strong attenuation, making it ideal for hop-forward and balanced American styles.

Each 70 mL PurePitch® pouch contains approximately 150 billion cells, designed to treat 5 gallons of wort.

Yes. Its clean fermentation profile allows hop aroma and bitterness to stand out clearly.

Ferment between 64–73°F for optimal performance and minimal ester production.

For standard gravity 5-gallon batches, a starter may not be required. For higher gravity beers or older yeast, a starter is recommended.

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