SafLager W-34/70 (German Lager)

The World's Most Popular Lager Yeast • Weihenstephan Heritage • Clean, Crisp Precision

SafLager W-34/70 is the most widely used lager strain on earth — the famous Weihenstephan 34/70 culture that ferments a remarkable share of the world's commercial lagers. It is prized for delivering pure, clean, crisp lager character with the consistency only a century of selection can produce.

With 82% attenuation and high flocculation, W-34/70 ferments thoroughly for a dry, refreshing finish and then drops brilliantly clear — the textbook German lager profile.

Flavor & Aroma Profile

• Exceptionally clean, neutral lager fermentation
• Crisp, dry finish with refreshing snap
• Delicate floral and subtle sulfur notes that condition out
• Transparent profile that showcases pilsner malt and noble hops
• Balanced, smooth drinkability

Fermented cold, W-34/70 is immaculately clean and classically German; it also tolerates warmer fermentation better than most lager strains, staying respectable into the mid-60s°F when temperature control is limited.

Brewing Applications

SafLager W-34/70 is a staple ingredient in virtually every lager style, including:

• German Pilsner
• Helles
• Munich Dunkel
• Märzen / Oktoberfest
• Bock and Doppelbock
• Schwarzbier
• American Lager

It is also the safest single answer to the question of which yeast to use for any lager, anywhere.

Usage Recommendations

Pitch two 11.5 g sachets into 5 gallons of lager-strength wort for a proper cold-fermentation cell count, fermenting at 53–59°F. The cold end produces maximum crispness and cleanliness; the warmer end speeds fermentation with minimal character cost.

After fermentation, hold a brief diacetyl rest around 62–65°F, then lager cold for two to four weeks for true German polish.

Specifications

• Attenuation: 82%
• Flocculation: High
• Fermentation Temperature: 53–59°F
• Format: 11.5 g dry sachet
• Beer Styles: Pilsners, helles, Märzen, bocks, dunkels, American lagers

Whether you're crafting a snappy German pils, a malty Oktoberfest, or your very first lager, SafLager W-34/70 delivers the clean, crisp fermentation that made it the world's standard.