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Further genetic analysis of 35 landrace strains from Western Norway, Eastern Norway, and the Baltics (a sub-group of landrace yeasts called 'European farmhouse yeast'), demonstrated that many (not all) farmhouse yeasts form their own third beer clade. They have a common ancestor from the Beer 1 clade, as well as an ancestor from Asia. Some other landrace yeast fall within the "mixed origin" beer yeast clade. Most of the European farmhouse yeasts are phenolic off flavor negative (POF-). Domesticated landrace yeast from Ghana, Africa that is backslopped and used to make sorghum/millet beer called 'pito' also formed their own subgrouping within other African yeasts <ref>[https://link.springer.com/article/10.1007/s00253-024-13267-3 Preiss, R., Fletcher, E., Garshol, L.M. et al. European farmhouse brewing yeasts form a distinct genetic group. Appl Microbiol Biotechnol 108, 430 (2024). https://doi.org/10.1007/s00253-024-13267-3.]</ref>. See this [https://www.garshol.priv.no/blog/436.html article by Lars Marius Garshol] and [https://www.facebook.com/groups/MilkTheFunk/posts/8160427600652049/ this post by Richard Preiss in MTF] for a summary summaries of this study.