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July 27, 2026Sources cited
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Lager

Lager is a style of beer fermented and conditioned at low temperatures, typically using bottom-fermenting yeast.

By Ethan Anderson| Reviewed by Olivia Bennett, Standards & Fact-Checking Lead| Updated July 27, 2026|2 min read| Fact-checked

Lager is a style of beer fermented and conditioned at low temperatures, typically using bottom-fermenting yeast. It is usually crisp and highly carbonated, and includes pale, amber, and dark varieties. The term comes from the German word for “storage,” referring to the cold maturation process used in brewing.

Brewing process

Lager is defined by cool fermentation followed by cold maturation, often called lagering. This process contributes to its clean flavour and clear appearance.

Yeast and fermentation

Lagers are typically made with bottom-fermenting yeast, especially Saccharomyces pastorianus. This yeast works at lower temperatures than the yeast commonly used for ales.

Styles and varieties

Lager is a broad category that includes pale lager, amber lager, and dark lagers. Well-known examples include Pilsner and bock, and pale lager is the most common commercial form.

History and etymology

The term lager comes from the German word for “storage,” because beer was traditionally stored in cool places before drinking. Historical brewing practices in cold cellars and caves helped define the style.

Key facts

  • Lager is brewed at relatively low temperatures and then matured in cold storage.
  • Most lagers use bottom-fermenting yeast, especially Saccharomyces pastorianus.
  • Pale lager is the most widely consumed and commercially available type of beer.
  • Lagers can be pale, amber, or dark, rather than being limited to one colour.
  • The word lager is derived from German for “storage,” reflecting the traditional cold-aging process.
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Canadian context

Lager is widely sold and consumed in Canada, and many major Canadian beer brands and breweries produce lager-style beers. It is also one of the most familiar beer styles to Canadian readers because of its broad availability in retail and hospitality settings.

Frequently asked questions

What is lager?
Lager is a beer style fermented and conditioned at low temperatures, usually with bottom-fermenting yeast.
How is lager different from ale?
Lager uses bottom-fermenting yeast at cooler temperatures, while ale is top-fermented and generally brewed warmer.
Why is it called lager?
The name comes from the German word for “storage,” referring to cold storage during maturation.
What colours can lager be?
Lager can be pale, amber, or dark.
What is the most common lager style?
Pale lager is the most widely consumed and commercially available style of beer.

References

  1. Wikipediahttps://en.wikipedia.org/wiki/Lager
    Supports: Definition of lager as a low-temperature, bottom-fermented beer; colour varieties; etymology; pale lager popularity.
  2. Merriam-Websterhttps://www.merriam-webster.com/dictionary/lager
    Supports: Definition of lager as beer brewed at cool temperatures with slow fermentation and the verb 'to lager'.
  3. Encyclopaedia Britannicahttps://www.britannica.com/topic/lager-beer
    Supports: Lager as a light-coloured, highly carbonated beer produced from bottom-fermenting yeast.
  4. Dictionary.comhttps://www.dictionary.com/browse/lager
    Supports: Lager as beer aged at cold temperatures and stored before use.
  5. Wikipediahttps://en.wikipedia.org/wiki/Beer
    Supports: Cooling/lagering phase, yeast type, and fermentation temperature ranges for lager.