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Mangrove Jacks Craft Series Belgian Wit Yeast M21

Mangrove Jacks Craft Series Belgian Wit Yeast M21

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Mangrove Jack's M21 Belgian Wit is a traditional top-fermenting dried ale yeast for witbier and other Belgian-style speciality beers. It balances fruity esters with warming spice phenolics.

What it brings to your beer

  • A good balance of fruity esters and spicy, phenolic warmth
  • Leaves some sweetness in the finished beer
  • Low flocculation, so the beer stays cloudy for longer, but it will drop bright if left long enough
  • Suits Witbier, Grand Cru, spiced ales and other speciality beers

Specifications

  • Type: top-fermenting ale yeast
  • Attenuation: medium (70-75%)
  • Flocculation: low
  • Fermentation temperature: 18-25°C
  • Dose: one sachet for up to 23 litres of wort

How to use it

Sanitise everything with ChemSan, then sprinkle the sachet straight onto up to 23 litres of cooled wort and ferment at 18-25°C. Store unopened sachets in the fridge.

A good pick for brewers making a hazy, orange-and-coriander style wit, or for adding Belgian character to a pale wheat beer. For a German hefeweizen with banana and vanilla instead, see M20 Bavarian Wheat.

Compare this against every beer & cider yeast we stock or read the full beer yeast technical specifications.

Frequently Asked Questions
How much wort does one sachet ferment?

One sachet is for up to 23 litres of wort.

What temperature should I ferment M21 at?

Mangrove Jack's recommends 18-25°C for best results.

Will my wit be cloudy?

M21 is a low-flocculation yeast, so it stays in suspension longer, which suits witbier. Left long enough, it will drop bright.

How should I store it?

Keep unopened sachets in the fridge.

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Yeast Specification

📉MediumAttenuation
🌡️18–25°CTemp Range
🫧LowFlocculation
🍷8%ABV Tolerance
🔬 SpeciesSaccharomyces cerevisiae
⏱️ Fermentation SpeedMedium
➕ Pitch Rate10–12g/20–30L
🎯 Recommended ForWitbier/White Ale
See all specifications (7 more)
🍑 Ester ProfileMedium - Citrus/Spice
🌿 Phenolic ProfileLight Phenolic
🌱 Hop PairingsSaaz/Hallertau
🌾 Malt PairingsWheat/Pilsner
🍺 Similar BeersHoegaarden-style
❄️ Storage Temp4°C
📅 Shelf Life24 months