Why do I get mould growing on my wine once I have added the sugar and yeast?
If it is mold, it probably can be treated and salvaged. But if it is “flowers of wine,” it may very well have eaten up most if not all of the alcohol in the wines “Flowers of wine” are usually white or nearly so and will not grow if the wine is over 10.5% alcohol. So, if the wines were at 12% alcohol, the chances are that it is mold. Carefully rack the wine into a sterilized secondary, being careful not to transfer any of the mold. Dissolve two crushed Campden tablets per gallon and one teaspoon of lemon juice per gallon in a cup of the wine. Add this to the wine, top up and refit the airlock (after sterilizing it and changing the water inside it). Let the wine sit a day or two and then draw off a sample and taste it. If it tastes all right, it probably is, but only a microbiological assay of the mold can guarantee you of this. You have to make the decision to drink the wine yourself. The only way that mold can grow on wine is for the mold spore to be introduced into the primary or sec
