One of the easiest ways to reduce incidence of hydrogen sulfide development is by making specific nitrogen adjustments during primary fermentation. As mentioned in the last blog post, poor nutrient management can also lead to stuck fermentations. Years of research has shown winemakers that a must’s starting nitrogen concentration varies from year to year. Thus […]
YAN
YAN… to the Rescue!
It’s impossible to talk about the pending harvest without talking about YAN. Every year, I run into winemakers asking me what nutrient additions to make when they do not know their starting YAN, or yeast assimilable nitrogen (aka yeast available nitrogen). Not knowing the must’s YAN concentration when treating fermentation with nutrient supplements is equivalent […]
