Temperature and Air Quality
When storing your fine wine, temperature can be its best friend
or its worst enemy. A temperature of between 13 and 14 degrees
Celsius is ideal for a wine's maturation, but only if it remains
constant.
Fluctuations in temperature during storage can cause expansion
and contraction of the wine, which will damage the integrity of the
cork and allow air to seep in. Once your wine comes into contact
with air, the irreversible process of oxidation will begin to ruin
your wine.
Temperatures higher than 13 to 14 degrees Celsius will increase
the chemical reactions inside a bottle. Your wine will not have the
luxury of the slow and controlled reactions that would otherwise
have given it a fantastic complexity. Even short periods of time
spent at the incorrect temperature can leave a wine's fruit
component hollow or flat, giving it an unpleasant aftertaste. Wine
stored at home cannot escape these inevitable fluctuations. Studies
show that wine, even when stored at a steady room or ambient
temperature, will mature eight times faster than it would in the
correct temperature. This is why wine is increasingly stored in
temperature controlled, commercial facilities.

Temperature damaged wine invariably loses its colour, aroma and
flavour. And, subsequently, its value. A brick red-brown colour is
an indicator of oxidation damage due to heat. Since sherry is an
oxidised wine, another indicator of heat damage in wine is a
sherry-like taste.
Where you choose to store your wine should be well ventilated,
to avoid musty smells, which can penetrate the cork and affect the
quality and flavour of your wine. If keeping your wine at home for
any length of time, you should never store it near fruit,
vegetables, cheese or anything else capable of fermenting.
With these elements that are so difficult to control, it is hardly
a surprise that most wines struggle to reach their full potential.
And, most importantly, less than perfect storage conditions could
put to waste all the consideration and care that has gone into the
making of the wine.