WHC Lab Thiol Unleashed hybrid dry yeast 11 g

Thiol Unleashed 11 g is a hybrid dry yeast designed for homebrewers seeking highly aromatic modern beers. Selected for its ability to release volatile thiols during fermentation, it enhances notes of tropical fruit, citrus, passion fruit and blackcurrant.

Thiols such as 3MA (grapefruit), 3MHA (passion fruit) and 4MMP (blackcurrant) occur naturally in hops and malt, but often in bound, non‑aromatic forms. Thiol Unleashed enables their enzymatic release, increasing aromatic complexity without adding more hops.

The strain is a hybridised Saccharomyces cerevisiae, combining the fermentation performance of brewing yeast with the thiol‑releasing ability of non‑brewing species — but without associated drawbacks (phenols, low attenuation).

Why choose this product?

• Powerful tropical aromas thanks to thiol release.
• Hybrid strain without undesirable phenols.
• Ideal for modern IPAs, NEIPAs, aromatic Pale Ales.

Technical characteristics

• Type: dry yeast
• Format: 11 g
• Strain: hybridised Saccharomyces cerevisiae
• Dosage: 0.5–1 g/L
• Fermentation temperature: 18–22 °C
• Alcohol tolerance: 13% ABV
• Attenuation: 74–80%
• Nitrogen requirement: medium
• Aromatic profile: tropical thiols, citrus, passion fruit, blackcurrant
• Released molecules: 3MA, 3MHA, 4MMP
• No other accessories or additives included.

Rolling Beers Tips

• Use hops rich in thiol precursors to maximise the effect (Citra, Nelson Sauvin, Motueka).
• Ferment around 20–22 °C for stronger aromatic expression.
• Ideal for highly hopped beers without increasing dry‑hop.

Product FAQ

• Is it suitable for modern IPAs?
  Yes, that’s exactly what it’s made for.
• Does the yeast produce phenols?
  No, the hybrid strain is selected to avoid them.
• Do I need to add more hops?
  Not necessary: the yeast releases thiols already present.