The Ultimate Guide to KVEIK Yeast: Unleashing Its Fermentation Potential

The short answer: kveik (say “kvike”) is a family of traditional Norwegian farmhouse yeasts that ferment fast and clean at temperatures that would stress most ale yeast, commonly 86–104°F (30–40°C) depending on the strain. Fermentation often finishes in two to four days, even from a small pitch, and many strains add citrus or tropical fruit notes. It’s popular for summer brewing without temperature control, hoppy beers and farmhouse ales.

	Kveik	Typical ale yeast
Fermentation temperature	Commonly 86–104°F (30–40°C), strain dependent	About 60–72°F (16–22°C)
Speed	Often 2–4 days	5–14 days
Pitch	Small pitches work	Normal pitch rates
Flavour	Clean to fruity, strain dependent	Strain dependent
Temperature control	Needs warmth, rarely cooling	Usually needs cooling in summer

Where kveik comes from

“Kveik” is a western Norwegian dialect word for yeast. Farmhouse brewers kept their own cultures going for generations, drying the yeast between brews (traditionally on wooden rings or sticks) and pitching it into warm wort. The beer was farmhouse ale, often brewed with juniper-infused water and sometimes not boiled at all.

Genetic studies show kveik is its own group of domesticated brewing yeast (Saccharomyces cerevisiae), not a wild yeast. A traditional culture is often a mix of several strains; commercial kveik is usually a single strain taken from a named farm’s culture, such as Voss or Hornindal.

Popular strains

Strain	Character	Good for
Voss (dry as LalBrew Voss, also liquid)	Orange peel and citrus; drops clear well	Pale ales, IPAs, farmhouse ales
Hornindal	Tropical fruit such as pineapple and mango	Hazy IPAs, fruit-forward pale ales
Lutra	Very clean, close to neutral	“Pseudo-lagers” and clean ales
Opshaug (WLP518)	Low flocculation, so it stays in suspension and holds the haze	Hazy IPAs

Temperature ranges differ from strain to strain, so check the pack. Our Cloud Walker and Chasing Ghosts hazy IPAs are both fermented with Opshaug.

How to ferment with kveik

1. Chill only to pitching temperature, typically 86–98°F (30–37°C). You stop chilling far earlier than with a normal ale, which saves time and water.
2. Pitch. One 11 g pack of dry kveik covers a 5 gal (19 L) batch of normal-strength beer. Kveik copes with smaller pitches better than most yeast, which is how farmhouse brewers used it. Like any yeast, a small pitch in warm wort tends to give more fruit.
3. Keep it warm. Fermentation makes its own heat, but in a cool room the beer will fall below the strain’s range. Wrap or insulate the fermenter, or use a heat belt, and don’t let it drop sharply mid-fermentation or the yeast can slow down.
4. Check the gravity. Most beers reach final gravity in two to four days. Two matching readings a day apart mean it’s done.
5. Crash and package. The warm finish cleans up most diacetyl, so there’s usually no separate rest; taste before you crash to be sure.

A real example: for Chasing Ghosts we pitched one pack of Opshaug at 104°F (40°C), fermented at 86°F (30°C), and the beer went from 1.066 to 1.014 in four days.

Harvesting and drying kveik

Kveik is easy to keep. Collect the yeast from the bottom of the fermenter after fermentation (a conical’s dump valve makes this simple on a Unitank) and store it in a sanitized jar in the fridge. See yeast washing for the steps.

To keep it longer, do what farmhouse brewers did and dry it: spread a thin layer of slurry on baking paper, let it dry at room temperature, then crumble it into a sealed jar and keep it in the fridge or freezer.

Troubleshooting

Problem	Likely cause	Fix
Slow or stalled	The beer cooled down	Warm it back into the strain’s range and insulate it
More fruit than you wanted	Very warm, small pitch	Ferment toward the bottom of the range or pitch more
Hot, solvent-like taste	Hotter than that strain likes	Stay inside the maker’s range
Beer won’t clear	A low-flocculating strain	Cold crash for a day or two, or choose a strain that drops clear
Green apple taste	Packaged too soon	Give it another day or two on the yeast before crashing

Frequently asked questions

Do I need temperature control with kveik?

Not for cooling, most of the time. The usual problem is the beer getting too cold, not too hot, so a warm room or a heat belt matters more than a chiller. See why fermenters heat up.

Can kveik make a lager?

Not a true lager, which needs lager yeast, a different species. Clean strains such as Lutra make crisp “pseudo-lagers” fermented warm in a few days.

Is kveik like saison yeast?

Not really. Both come from farmhouse traditions, but commercial kveik strains are known for fruit, not the clove and pepper of saison or hefeweizen yeast.

Can I ferment kveik at normal ale temperatures?

Many strains will, just more slowly and often more cleanly. Check the low end of the range on the pack.

Related guides

Why fermenters heat up, dry vs liquid yeast, how yeast make beer, harvesting and washing yeast, hazy IPA recipe.