Stuck Fermentation
/STUK fur-men-TAY-shun/Fermentation that stops before all sugar is consumed.
Full Definition
Stuck fermentation occurs when yeast dies or becomes inactive before converting all sugar to alcohol, leaving unintended residual sugar. Causes include temperature extremes, nutrient deficiency, high alcohol toxicity, or wild yeast failure. Restarting requires adding fresh yeast and carefully managing conditions.