In other articles, I’ve noted how nitrogen is one of the key compounds yeast need to turn apple juice into hard cider. It’s essential for protein synthesis and protein is needed to transport sugar into the yeast cell. Sugar creates the energy, ATP, needed for cell function and reproduction or what we prefer to call … Continue reading How Nitrogen Impacts Cider Fermentation
Tag: nutrients
Cider Nutrients: The Need for Nitrogen (YAN)
Many books and articles that you read on fermenting wine talk about how you need to add nutrients and specifically nitrogen to ensure a healthy ferment. While lack of other nutrients can slow or stop fermentation prematurely, nitrogen is considered the number one cause for wine fermentation to slow or stop. This is because nitrogen … Continue reading Cider Nutrients: The Need for Nitrogen (YAN)
Cider Words: Yeast Derivative Products (YDPs)
Yeast Derivative Products (YDPs) can aid fermentation, turbidity, and aroma. Have you ever heard of Yeast Derivative Products (YDPs)? If you are exposed to the wine industry, you have probably come across them as they are becoming more widely used in that industry. Rarely do I hear about there use in cider. I should clarify … Continue reading Cider Words: Yeast Derivative Products (YDPs)
Fermentation Stages of Yeast
It is common to talk about fermentation in stages and often there are three stages identified. If you are talking about a wild or natural fermentation, those stages might be how initially non-Saccharomyces strains start the fermentation. This is followed by Saccharomyces yeast that complete fermentation. The final stage is maturation where Brettanomyces strains often … Continue reading Fermentation Stages of Yeast
Yeast Starter for Cider
A yeast starter is used to increase the biomass of a yeast and to ensure the yeast cells are healthy and ready to ferment. It is how you grow more yeast cells to ensure you have enough for a robust ferment and to ensure the yeast cells you are using are healthy and full of … Continue reading Yeast Starter for Cider
Yeast Propagation for Cider
Whether you use commercial yeast or wild yeast, you really should be thinking about yeast propagation. Yeast propagation is the process of taking a small yeast sample, usually from a plate or slant and growing it until you have enough to pitch into your juice to make cider. You might be thinking, that sounds like … Continue reading Yeast Propagation for Cider
Nutrient Deprivation: Keeving
Keeving is a process that seeks to remove nutrients needed for fermentation in order to create residual sweetness. Yeast need nutrients and vitamins to ferment and while they are good at finding or creating many of these nutrients, it only takes the loss of one to stop the process. Keeving is a process that removes … Continue reading Nutrient Deprivation: Keeving