The risk of off-flavors: How to correctly start homemade fermentationThe success of homemade wine depends less on the sugar quantity or berry variety and more on how vigorously the yeast begins its work. Adding dry granules directly to the must can lead to sluggish fermentation or off-flavors. Pre-activating the yeast is a practical way to verify culture viability and provide a head start before the main process. IngredientsCultured Wine Yeast ActivationWater (35-40 °C / 95-104 °F)Sugar (approximately 1 teaspoon per 100 ml of water)Wine yeastPreparationStep 1. Yeast Type Activation Process Readiness Sign Cultured Warm water + sugar (15-20 min) Foam/bubbles Wild Water + sugar (several hours) FoamFrom the kitchen: It is advisable to use only yeast within its expiration date.