WLP530 / Westmalle Trappist
The Trappist abbey strain. Produces banana, clove, pepper, and dried fruit. Drives the world's most age-worthy beers.
What it tastes like
If you've had Westmalle Dubbel, Westmalle Tripel, Westvleteren 8, or Westvleteren 12, you've tasted this yeast. All four beers — among the world's most revered — come from the same yeast strain (the abbeys share cultures). It's a power-fermenter that handles 12%+ ABV cleanly while producing banana, clove, white pepper, and rich dried-fruit character. The strain is what makes Belgian Trappists taste like Belgian Trappists.
Best in these styles
Fermentation profile
Start at 68°F, let the temperature ramp up to 75°F over 4-5 days as fermentation progresses — Belgian breweries actually WANT the heat. Produces complex layered esters and phenolics. Use Belgian candi sugar (D-90, D-180) for bigger beers to boost ABV without adding body. Bottle-condition for proper carbonation and continuous aging.
Available as
WLP530 / Westmalle Trappist is sold under multiple supplier brand names — same or near-identical strain.
| Format | Supplier | Product code | Notes |
|---|---|---|---|
| Liquid | White Labs | WLP530 Abbey Ale | 100B cells |
| Liquid | Wyeast | 3787 Trappist High Gravity | 100B cells |
| Dry yeast | Fermentis | Safale BE-256 | 11.5g Close approximation; less expressive than the liquid versions |
| Liquid | Imperial | Triple Double B45 | 200B cells |
Comparable strains
If you can't source this strain, these alternatives bring overlapping character or fermentation behavior.
History
The Westmalle Trappist abbey in Belgium has been brewing since the 1830s and developing this yeast strain since the late 1800s. The strain was shared with neighboring Trappist abbeys (including Westvleteren) and eventually leaked to commercial yeast labs in the 1990s. White Labs WLP530 and Wyeast 3787 are both believed to be direct descendants of the Westmalle culture.