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Weyermann® Isaria 1924®

Weyermann Isaria
Weyermann Isaria
Weyermann® Isaria ® Maltbag
Color °Lovibond
Moisture % Max
Protein Total
Extract FG Min
Usage Rate
Up to 100%


Isaria is an heirloom German barley variety that was first approved for commercial use in 1924, making it the oldest certified German brewing barley. The influence of Isaria on German brewing and brewers’ preference for it during the first half of the 20th century were strong reasons for Weyermann®, in its continuous search for heirloom varieties with unique sensory profiles, to bring Isaria from 1924 into the 21st century.

Thanks to its malty-sweet flavor and soft biscuit-like aroma, brewers used Isaria as the base for flavorful traditional German Lagers, such as Keller, Märzen, and Zoigl beers. Isaria is also great for modern craft lagers and malt-forward ales.

Weyermann® recommends Isaria 1924® at up to 100% for:

  • Pale Lager: Zoigl, Franconian Landbier
  • Amber Lager: Kellerbier, Märzen, Festbier
  • Dark Lager: Munich Dunkel
  • Bock: Pale Bock, Dark Bock


Featured Testimonials

Isaria has a bready sweetness. It goes well with the slight alcohol edge you can get in a Maibock. I think it adds a lot of body to the beer, too. It offers deep bread and lots of honey character, but not cloying or sweet.

Phil Roche, head brewer at Ecliptic Brewing