Mangrove Jack’s M15 Empire Ale Yeast – 10g Sachet
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: Mangrove Jack
- Yeast Type:
- Attenuation: 82% - 88%
- Flocculation: Medium
- Temperature: 64°F - 82°F
Classic British Ale Character with Strong Malt Expression
Mangrove Jack’s M15 Empire Ale Yeast is a versatile top-fermenting yeast that delivers the bold, full-bodied character associated with traditional English ales. This strain enhances malt complexity while producing only moderate esters, making it ideal for brewers looking to showcase rich grain profiles without overpowering fruitiness. Whether you're brewing a sessionable Bitter or a malt-forward Extra Special Bitter (ESB), M15 helps create a refined balance of depth, clarity, and drinkability.
Designed for crafting authentic British-style beers, M15 promotes excellent clarity thanks to its high flocculation, and it ferments cleanly at moderate temperatures. Its ability to preserve malt nuance while fermenting reliably makes it an excellent house strain for brewers focused on English and American amber styles.
Key Characteristics
- Yeast Type: Top-fermenting dry ale yeast
- Beer Styles: Best Bitter, ESB, Mild Ale, English Pale Ale, Brown Ale, American Amber
- Fermentation Temperature Range: 64–72°F (18–22°C)
- Attenuation: 70–75%
- Flocculation: High
- Alcohol Tolerance: Up to 9%
- Flavor Profile: Bold malt presence, light fruit esters, clean and balanced finish
Brewing Applications
M15 is ideal for brewers who want to bring out the best in English-style ales. It enhances biscuity, toasty, and caramel malt notes while contributing subtle fermentation character, allowing your malt bill to shine. Use M15 for brewing traditional British pub ales, including:
- Best Bitter and Ordinary Bitter
- Extra Special Bitter (ESB)
- English Pale Ale
- Mild Ale and Brown Ale
- American Amber or hybrid malty ales
Usage & Pitching Recommendations
- Direct Pitch: Sprinkle the contents of the sachet directly into the cooled wort (64–72°F) for a standard 5–6 gallon (20–23 L) batch.
- Rehydration (Optional): For optimal performance, rehydrate in 10x weight of sterile water or wort at 77–86°F (25–30°C) for 15–30 minutes before pitching.
Storage & Shelf Life
- Storage: Store in a cool, dry place. Refrigeration recommended for long-term storage.
- Shelf Life: Up to 24 months from production date when unopened and properly stored.