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Weyermann® Isaria 1924®

Colour °Lovibond
3.1 - 3.8
Moisture % Max
Protein Total
11.0 - 13.0%
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 21th century.

Thanks to its malty-sweet flavour and soft biscuit-like aroma, brewers used Isaria as the base for flavourful 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