M44 is Mangrove Jacks' American West Coast ale yeast — a clean, highly attenuative strain that produces the dry, hop-forward finish that defines modern West Coast IPA. It enhances hop aroma without contributing competing yeast character.

Best suited to: West Coast IPA, American IPA, Double IPA, American Pale Ale, American Amber Ale, Steam Beer (California Common).

Fermentation parameters:

• Temperature: 18–23°C (optimal 19–21°C)
• Attenuation: High (approx 75–80%)
• Flocculation: Medium-High
• Alcohol tolerance: up to 12% ABV
• Pitching rate: 1 sachet per 23L at standard gravity

Flavour contribution: Clean and dry. Very low ester production keeps the fermentation profile neutral, allowing bitterness and hop aroma to dominate the finish.

Choose M44 over US-05 when you want more dryness and slightly more hop emphasis. Both are clean American ale yeasts, but M44 attenuates more aggressively. Choose M44 over M66 when you want clean and dry rather than tropical and hazy.

Pitching note: Rehydrate in 10x its weight in 27°C water for 15 minutes, or pitch directly. For high-gravity beers above 1.065, add yeast nutrient.

Storage: Keep refrigerated. Once opened, reseal and use within 7 days.