OYL-101 Pilsner I Omega Yeast


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Omega Yeast OYL-101 Pilsner I is thought to be the H strain of the famous Pilzen brewer.  This lager strain results in a dry and neutral taste profile, having gentle malt characteristics with a lightly perceptible floral aroma. The first of the famous Czech strains inspiring America’s most famous light, brilliantly clear, golden lagers. Commonly produces sulphur during fermentation that clears during lagering. Watch out for diacetyl.

Omega Yeast's metabolically healthy cells produce vigorous fermentation and consistent results for home brewers and probrewers alike.  Each homebrew pack (150ml) is packed with  225b cells.

Strain Type

  • Lagers


  • Medium-High


  • 72-76%

Temperature Range

  • 9–15° C (48–56° F) 

Alcohol Tolerance

  • 9%

Comparable to:

  • GY002 Czech Pilsner GigaYeast
  • WLP800 Pilsner Lager Yeast White Labs
  • WY2001 Pilsner Urquell H-Strain Wyeast