CellarScience – CALI American Ale Yeast x 12g

CellarScience CALI American Ale Yeast 12g is one of the most versatile and widely used ale yeast strains available to brewers. Known for its clean fermentation profile and reliable performance, this premium dry yeast allows both malt and hop character to take centre stage, making it a favourite among home brewers and professional craft breweries alike.

The popularity of CellarScience CALI American Ale Yeast 12g comes from its ability to produce exceptionally clean beers with minimal yeast-derived flavours. As a result, hop aromas, bitterness, and malt complexity remain prominent in the finished beer. This makes it an excellent choice for brewers who want complete control over recipe design without excessive ester production interfering with the final flavour profile.

Like all CellarScience yeast strains, CellarScience CALI American Ale Yeast 12g is suitable for direct pitching straight into wort without requiring oxygenation during the initial stages of fermentation. Furthermore, each sachet contains 12g of yeast, providing up to 9% more yeast than many competing dry yeast brands. This helps deliver strong fermentation performance and excellent consistency from batch to batch.

Every batch undergoes PCR testing to ensure contamination-free yeast and exceptional quality control. In addition, the advanced aerobic growth process produces highly viable yeast cells with elevated sterol levels and pre-loaded nutrients, helping support healthy and complete fermentations.

Whether you’re brewing an American Pale Ale, West Coast IPA, Hazy IPA, Blonde Ale, Porter, Stout, or almost any modern craft beer style, CellarScience CALI American Ale Yeast 12g delivers clean fermentation and dependable results every time.

Key Features

• Clean and neutral American ale yeast strain
• Allows malt and hop character to shine
• Suitable for a wide range of beer styles
• Ideal for hop-forward beers
• Suitable for direct pitching
• No initial oxygenation required
• PCR tested for contamination-free performance
• Contains 12g of yeast per sachet
• Up to 9% more yeast than many competing brands
• Medium flocculation
• Gluten-free yeast strain
• Suitable for home brewers and professional breweries

Ideal Beer Styles

• American Pale Ale
• American IPA
• West Coast IPA
• Hazy IPA
• Blonde Ale
• Cream Ale
• American Amber Ale
• Porter
• Stout
• American Brown Ale
• Double IPA
• Specialty Craft Ales

Direct Pitch Method

1. Cool wort to the desired fermentation temperature.
2. Sprinkle the yeast directly onto the wort surface.
3. No oxygenation is required during the initial fermentation stage.
4. Ferment within the recommended temperature range.
5. Allow fermentation to complete before conditioning and packaging.

The advanced aerobic growth process produces high sterol levels and excellent viability, making direct pitching simple and effective.

Rehydration Method

While direct pitching is recommended, rehydration can also be used.

1. Sanitize the yeast sachet and scissors.
2. Prepare sterilised water at 29-35°C.
3. Use 10g of water mixed with 0.25g of FermStart per gram of yeast.
4. Sprinkle yeast onto the water surface.
5. Allow to stand undisturbed for 20 minutes.
6. Gently swirl to form a slurry.
7. Adjust slurry temperature to within 6°C of wort temperature before pitching.

Fermentation Performance

Optimum Fermentation Temperature:
15-22°C

Attenuation:
75-84%

Flocculation:
Medium

Alcohol Tolerance:
10-11% ABV

International Code:
DY103

Similar Strains:
WLP001, WY1056, SafAle US-05

Gluten-Free:
Yes

The clean fermentation profile makes this strain ideal for showcasing hop aroma, bitterness, and malt character without excessive ester production.

Dosage Information

Standard Batch Size:
One 12g sachet treats a 19-23L batch.

Larger Batches:
Use at a rate of 0.5-0.8g per litre.

Commercial Dosage Rate:
51.28-85.47g per 100L

For larger brews, CellarScience recommends rounding up to the nearest full sachet rather than measuring partial amounts.

Why Choose CellarScience Yeast?

For many years liquid yeast was considered the premium option for brewing. However, modern dry yeast technology has changed the landscape significantly. CellarScience dry yeast strains offer excellent cell counts, high viability, reliable shipping stability, and convenient direct pitching.

As a result, brewers receive premium yeast performance without the higher cost often associated with liquid cultures. The combination of quality, convenience, and value makes CellarScience a popular choice among both home brewers and professional breweries.

What’s Included

• 1 x CellarScience CALI American Ale Yeast 12g Sachet