5 things that can go wrong with wine and how to prevent them

Heat is wine’s number one enemy, making it age faster and develop irreversible stewed aromas. When this happens, it is referred to as “cooked” wine. Heat can also cause wine to expand in volume, increasing pressure on the cork, which can compromise the seal and lead to seepage and bacterial contamination. While not as bad as heat, cold temperatures can also damage wine. At around -6°C wine will freeze and expand, putting pressure on the cork, just like heat.

What to do? Store your wine at a constant temperature between 13-15º C.

The humidity in your wine cellar should range from a low of 60% (to prevent the corks from drying out and cracking) to a high of 80% (to prevent mold from developing and damaging a wine’s label).

What to do? If you’re concerned about humidity fluctuations, you can install either a humidifier or a dehumidifier.

Since light, especially wavelengths like UV, breaks down the complex molecules that contribute to a wine’s desirable flavours, it shouldn’t be exposed to excessive amounts of light. Most wines have built-in protection against the light, with darker coloured glass bottles.

What to do? Keep your cellar dark. Use incandescent bulbs instead of fluorescent lights, because they emit smaller amounts of UV waves.

Because wine breathes through the cork, letting oxygen in over time, it is important that the air in your wine cellar be clean. Otherwise, you risk altering the flavour and bouquet of your wine. Some odorous molecules are benign, while others, like chemical compounds in fresh paint and cleaning supplies, are more harmful. Aromatic food products, like garlic, can also seep into your wine.

What to do? Be careful what you store or do in or near your cellar. 

As red wine matures, sediment is formed when the solids in the wine (typically tannins) fall to the bottom of the bottle. Excessive vibrations can alter a wine’s composition by reintroducing some of those solids into the liquid, as well as speeding up chemical reactions that should occur slowly.

What to do? Although it may be hard to eliminate vibrations totally, especially in a city environment, it’s best to store your wines away from household appliances.