It could be a mold beginning to forming but most likely it is a bacterial infection.
Wine cellar white mold.
Wine enthusiast vinoview 155 bottle wine cellar t he best thing to do is to keep an eye out for the first signs of mold and take humidity level readings in the cellar.
It appears white or light gray like a coating of unsettled dust.
Mold inclines to grow in wine barrel storage rooms due to stagnant air.
Mildew a type of fungus similar to mold may also appear white and powdery.
If you regularly find mold in your wine cooler the most likely reason is high humidity.
Instead pour slowly and carefully to keep it in the original bottle.
Vinny what s the best way to clean mold off of wine bottles.
White mold can be confused with efflorescence a mineral deposit caused by water seepage.
Closer inspection under good lighting will reveal a fungal growth pattern of spots like tiny mushrooms.
By editor september 9 2015 mold prevention.
This not only can taint the wine but also it can create.
Wine cellar mold prevention.
If you want sediment to remain in the wine don t use filter paper.
Surface mold won t affect your wines inside their bottles but you should try to keep it under control and watch the humidity in your cellar to make sure there s not a larger systemic problem.
This can happen if the wine has completed its fermentation and has become still when an air lock goes dry or is taken off the glass jug fresh air can encourage bacteria to grow winemaker s refer to this as flowers.
Dear scott wine cellars are supposed to be humid so unfortunately sometimes mold happens.
Many types of mold can appear white in color depending on the type of material on which they are growing including aspergillus cladosporium and penicillium penicillium is often blue or bluish green and white.
To soak up excess moisture put some silica beads baking soda or a mesh bag of white chalk in your wine cooler.
Types of white mold in basement environments.
If you ve killed all the mold in your wine cooler and it is still coming back try switching cleaners.
Pour the wine through filter paper to prevent the mold from being transferred.
Pour the wine into a clean sanitized bottle.
That said you might want to check and make sure your target humidity is about 70 percent which will help keep your corks from drying out.
White mold is usually found in cool and damp areas such as basement walls.
In the benefits for humanity series explains how growing crops in space could be helpful in the prevention of mold in wine cellars.