13,696
edits
Changes
no edit summary
Kveik also tend to finish beers at a slightly low pH than conventional ale yeast and lager yeast. In a survey of data from around 60 strains of yeast total, Escarpment Labs showed that kveik strains on average finished around 4.25 final beer pH while conventional ale/lager yeast strains finished on average around 4.50 final beer pH for the same wort. This can have an impact on the overall sensory nature of kveik. For example, a lower pH is sometimes associated with the perception of a thinner body as well as a harsher and more astringent hop character. The use of buffering minerals in the mash such as baking soda, lime, or chalk, can help adjust the pH back up if desired <ref>[https://www.escarpmentlabs.com/single-post/2019/10/20/Crispy-brewing-with-kveik Richard Preiss. Escarpment Labs blog post, "Crispy brewing with kveik: mind the pH gap." 11/26/2019. Retrieved 11/26/2019.]</ref><ref>[https://www.facebook.com/groups/MilkTheFunk/permalink/3082701461758047/ Richard Preiss. Milk The Funk Facebook thread on kveik resulting in a lower pH for final beer. 11/26/2019.]</ref>.
This tendency to producer slightly lower pH beers than normal brewing yeast is not universal, however. Fermentation conducted with unpurified original kveik cultures may have different results than single isolate strains. For example, [https://nmbu.brage.unit.no/nmbu-xmlui/handle/11250/2681970?show=full Nadia Marlen Aasen's Master's thesis from Norwegian University of Life Sciences] found that the same wort (Weyermann Pilsner malt, 60 minute bittering hops at 18 IBU, and the wort soaked in 1 kg of juniper twigs per 10 liters of wort) fermented with US-05 finished between 3.8-4.0 pH, Ørjasæter kveik finished at 4.1-4.2 pH, Gamlegrua kveik finished at 4.1-4.3, and Gausemel kveik finished at 3.8-4.0 pH <ref name="Aasen" />.
See also: