Mangrove Jack’s M41 Belgian 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:
High-Performance Belgian Yeast for Strong, Complex Ales
Mangrove Jack’s M41 Belgian Ale Yeast is a top-tier strain for brewing strong, expressive Belgian-style ales with incredible depth and character. Known for its high attenuation and elevated alcohol tolerance, M41 creates beers with spicy phenolics, ripe fruit esters, and a crisp, dry finish. This yeast brings out classic Belgian fermentation traits such as clove, banana, and subtle plum, delivering authentic complexity in every sip.
M41 is perfect for high-gravity Belgian ales like Tripels, Dubbels, and Belgian Strong Golden or Dark Ales. It produces a clean fermentation profile with layered yeast-driven flavors that complement both simple and intricate malt bills. Thanks to its medium flocculation and efficient sugar conversion, it leaves behind little residual sweetness, allowing bold esters and phenols to define the beer’s personality.
Whether you’re crafting a monastery-inspired ale or a modern twist on a Belgian classic, M41 offers the versatility and performance to achieve consistent, flavorful results. Brewers seeking to highlight yeast character while maintaining drinkability and structure will find this strain a powerful and reliable choice.
Key Characteristics
- Yeast Type: Top-fermenting dry ale yeast
- Beer Styles: Belgian Tripel, Dubbel, Belgian Strong Golden Ale, Belgian Dark Strong Ale, Belgian Blonde Ale
- Fermentation Temperature Range: 64–82°F (18–28°C)
- Attenuation: Very High (82–92%)
- Flocculation: Medium
- Alcohol Tolerance: Up to 12% ABV
- Flavor Profile: Spicy phenolics, banana and plum esters, dry finish
Brewing Applications
M41 is ideal for Belgian beer styles where yeast character is the centerpiece of the flavor profile. It performs well across a wide fermentation range, offering flexibility for brewers who want to fine-tune the balance between spice and fruit. Use warmer temps (above 72°F) to push esters like banana and bubblegum, or stay cooler (closer to 64°F) for sharper phenolics like clove and pepper. M41 is an excellent choice for:
- High-ABV Belgian Tripels and Golden Strong Ales
- Dark, rich Dubbels and Belgian Dark Strong Ales
- Fruity and dry Belgian Blonde Ales
- Experimental hybrids and spiced ales where yeast complexity is key
Usage & Pitching Recommendations
- Direct Pitch: Add one 10g sachet directly into wort at 64–82°F for a 5–6 gallon (20–23 L) batch.
- Rehydration (Optional): Rehydrate in 10x its weight of sterile water at 77–86°F (25–30°C) for 15–30 minutes prior to pitching.
Storage & Shelf Life
- Storage: Keep in a cool, dry place. Refrigerate for long-term storage.
- Shelf Life: Up to 24 months from the production date (unopened).