CELLARSCIENCE – ROKKAR ALE 15G

RØKKAR: The Rapid-Fermenting Kveik for Subtle Tropical Fruit Esters

RØKKAR is a next-generation, rapid-fermenting ale yeast strain selected for its ability to quickly ferment wort and provide a subtle tropical fruit ester profile. It flocculates extremely well, forming a dense, solid yeast cake, and is capable of cutting conditioning times by up to 75%, delivering crystal-clear results faster than ever before.

🍍 Styles & Flavour Profile: Accelerated Clarity and Subtle Fruit Notes

RØKKAR’s unique characteristics—rapid fermentation, high flocculation, and clean profile— make it versatile enough for both modern hop-forward and traditional malt-driven styles.

Rapid Turnaround and Clarity

• Rapid Conditioning: Significantly reduces conditioning time by up to 75%.
• Clarity: Flocculates extremely well, forming a dense, solid yeast cake for improved clarity.
• Flavour: Provides a delicate tropical fruit profile which is further enhanced by fruit-forward hops.

Ideal for Brewing

RØKKAR’s extreme robustness and versatility make it suitable for a vast range of styles:

• New England & Hazy IPAs
• India Pale Ales (IPAs)
• Porters & Stouts
• Belgian-Style Ales

🔬 Performance & Technical Specifications

RØKKAR is exceptionally reliable across a massive temperature range, making it one of the most robust and versatile strains available.

Fermentation & Pitching Details

• Fermentation Range: Thrives across an extremely wide range of 18-35°C (65-95°F).
• Alcohol Tolerance: Extremely robust, capable of tolerating up to 15% ABV.
• Attenuation: Consistently achieves approximately 75-83% attenuation.
• Direct Pitching: Designed to be sprinkled directly onto the surface of your wort with no pre-oxygenation or rehydration required before pitching.

Packaging & Dosage

One sachet is enough to treat a single 19-23L batch.

When calculating for larger batches, use at a rate of 0.5-1g per Liter. We recommend rounding up by one full sachet rather than measuring out the yeast exactly.

RØKKAR bricks are designed to provide maximum cell count for superior pitching rates and reliable fermentation every time.

Calculation for Larger Batches

• Use at a rate of 0.5-1g per Litre (approx. 50-100 g/hL).
• Increase toward 1.5–2.0 g/L for high gravity or heavy ester production