Wyeast 2124 Bohemian Lager
Wyeast 2124 Bohemian Lager

Wyeast 2124 Bohemian Lager

$13.99
Wyeast 2124 Bohemian Lager is a Carlsberg-type strain—the world's most widely used lager yeast—delivering malty character, a crisp finish, and standout versatility.
  • Carlsberg-type strain—the world's most widely used lager yeast
  • Malty and crisp with light ester character; great for Cold IPAs
  • Contains 100 billion cells, treats 5 gallons
Ice pack:

Ice Packs / Shipping:For best results, we strongly recommend adding an ice pack to your liquid yeast order. Ice packs do not guarantee that yeast will arrive cold, but will keep yeast colder for longer during transit. We can not replace yeast that arrives warm. In warm weather months, we highly encourage choosing dry yeast. Liquid yeast is final sale. As a live, perishable ingredient that requires refrigeration, we are unable to accept returns or exchanges once an order has left our warehouse.

Storage: Store in the fridge (33–38ºF). Do not freeze. Pitch cold - do not warm to room temp prior to pitching. Use within 4 months for direct pitching. For pouches older than 4 months, or that are warm, use a yeast starter to boost cell count.

Fermentation Temp Range
Each yeast strain has a temperature range where it performs best. Lagers require cooler temps, while Kveik yeasts can ferment in extreme heat. Maintaining the proper fermentation temperature for each yeast strain is crucial its health. Matching a yeast's ideal range to your environment (or your ability to control temp) is key to getting clean, consistent results.
Scale from 30°-120°F
Product Analysis
This typical analysis is not to be construed as product specification. Typical analysis represents average values, not to be considered as guarantees, expressed or implied, nor as a condition of sale.

Yeast Format, Liquid
Yeast Style, Lager
Flocculation, Low Medium
Attenuation, 73~77%
Fermentation Temperature Range, 45~68°F
Alcohol Tolerance, 9%

Wyeast 2124 is a Carlsberg-type lager strain and the most widely used lager yeast in the world. It produces a distinct malty profile with some ester character and a clean, crisp finish—the classic backbone of traditional lager brewing.

With low-to-medium flocculation and 73–77% attenuation, it ferments cleanly and clarifies well with proper cold conditioning. Ferment lagers and Pilsners at 45–55°F (8–12°C), or brew Common beer styles warm at 65–68°F (18–20°C). Alcohol tolerance reaches approximately 9%, and a thorough diacetyl rest is recommended after fermentation is complete.

Wyeast 2124 is remarkably versatile across pale and dark lagers—and a top pick for Cold IPAs.

Ideal for:

• Munich Helles
• Czech Premium Pale Lager
• German Pils
• Märzen
• Vienna Lager
• Munich Dunkel
• Schwarzbier
• Doppelbock
• Baltic Porter
• California Common

Liquid yeast can deliver excellent fermentation performance and a wider range of strain options, but it’s a living, perishable product that requires a little extra care.

  • Liquid yeast may arrive warm. Ice packs help reduce heat exposure but do not guarantee cold arrival.
  • Refrigerate it when received and plan to brew as soon as possible.
  • We recommend adding an insulated mailer + ice pack to liquid yeast orders.
  • During May–September, dry yeast is strongly recommended due to higher shipping temperatures.
  • Liquid yeast is final sale and cannot be replaced due to heat exposure during transit.

New to liquid yeast? Read our Complete Guide to Liquid Yeast →

• Store refrigerated at 33–38°F
• Do not freeze
• Pitch cold into well-oxygenated wort
• Ferment lagers and Pilsners at 45–55°F (8–12°C)
• Ferment Common beer styles at 65–68°F (18–20°C)
• Perform a thorough diacetyl rest after fermentation
• Lager cold for several weeks for best clarity and smoothness
• Consider a starter for higher-gravity lagers

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Wyeast 2124 Bohemian Lager
From $13.99

Frequently Asked Questions

Wyeast 2124 produces a distinct malty profile with some ester character and a clean, crisp finish—classic traditional lager character.

Yes. Wyeast 2124 is considered an ideal choice for brewing Cold IPAs, giving a clean, crisp, lager-fermented base.

Ferment lagers and Pilsners between 45–55°F (8–12°C). For Common beer styles like California Common, it can also ferment warm at 65–68°F (18–20°C).

Yes. A thorough diacetyl rest is recommended after fermentation is complete.

Each Wyeast Activator pack contains approximately 100 billion cells—enough for a standard 5-gallon batch. Use a yeast starter for higher-gravity lagers or older packs.

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