Scientifically, yeast are identified by a classification methodology. They are part of the fungi kingdom and they will have different families and orders(1). For alcoholic beverages makers, like hard cider makers, we usually focus and talk about three classifications for yeast. The first and highest level is the genus. Saccharomyces is a genus of yeast. … Continue reading Cider Yeast: Classifications
What is cider yeast?
It seems like a simple question and yet it’s actually a very complex one. For one thing, yeast are found about everywhere and there are thousands of different types of yeast. Should we therefore consider the yeast found on the apple as true cider yeast? What about the yeast found on the equipment used to … Continue reading What is cider yeast?
Alternative Cider Yeast: Pichia kluyveri Overview
Pichia kluyveri is found on many types of fruit but also on the fleshy part of the plant(1). Several isolated strains came from prickly pears in Arizona and California, which I appreciate given where I currently live. However, it was also isolated from olives and is very common on apples as well as coffee. It … Continue reading Alternative Cider Yeast: Pichia kluyveri Overview
Alternative Cider Yeast: Starmerella bacillaris (Candida zemplinina) Overview
Originally isolated from grapes in California in 2002 and classified as Candida zemplinina in 2003. It was later changed to Starmerella bacillaris. The two samples I obtained from the USDA were logged under Candida zemplinina. Like many yeast, the advent of DNA sequencing has helped better classify many different yeast strains. However, recognize that you … Continue reading Alternative Cider Yeast: Starmerella bacillaris (Candida zemplinina) Overview
Natural Preservatives: Killer Factors
Killer toxins to prevent Brettanomyces spoilage In my research on preservatives like Campden (potassium metabisulfite) and potassium sorbate that are commonly used in wine and cider to preserve the cider as well as prevent residual sugar from fermenting, I was always interested in finding alternative methods. Preserving hard cider is generally about stopping various bacteria … Continue reading Natural Preservatives: Killer Factors