2124 is a Carlsberg type yeast—the most widely used lager strain in the world Produces a distinct malty profile with some ester character and a crisp finish Activator Smack-Pack System™ "proofs" the yeast and shortens lag time when it hits your wort When smacked, the Activator™ packet releases sugars and nutrients to initiate the culture's metabolism Wyeast has been a pioneer in craft brewing for over 35 years and is committed to creating the finest fermentation products available Although beneficial, cultures do not need to be activated prior to inoculation This Carlsberg type yeast is the most widely used lager strain in the world. This strain produces a distinct malty profile with some ester character and a crisp finish. A versatile strain, that is great to use with lagers or Pilsners for fermentations in the 45-55°F (8-12°C) range. It may also be used for Common beer production with fermentations at 65-68°F (18-20°C). A thorough diacetyl rest is recommended after fermentation is complete. Attenuation: 73-77% Flocculation: Low Medium Alcohol Tolerance: 9% Optimum Fermentation Temp: 45-68°F Cell Count: 100 Billion Styles: Baltic Porter Bière de Garde Bohemian Pilsner Classic American Pilsner Dark American Lager Doppelbock Dortmunder Export Eisbock German Pilsner (Pils) Maibock/Helles Bock Munich Dunkel Munich Helles Oktoberfest/Märzen Schwarzbier (Black Beer) Traditional Bock Vienna Lager For best results we always recommend ordering an ice pack with your liquid yeast. Please Note: When choosing an ice pack option beware that the liquid yeast will not arrive cold even when shipped together. Ice packs and insulated mailing options are designed to keep the yeast colder for longer during shipment, but they will not ensure that your yeast arrives cold. We will not replace liquid yeast that arrives warm. During warmer months we strongly recommend you choose dry yeast.

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