
An underground wine cellar.
A 'wine cellar' is a storage room for
wine in
bottles or
barrels, or more rarely in
carboys,
amphorae or plastic containers. Wine cellars are usually located completely underground, and often have direct contact to the surrounding
soil via a gap in the foundations.
Purpose
Wine cellars offer the opportunity to protect
alcoholic beverages from potentially harmful external influences, providing
darkness and a constant
temperature. Wine is a natural, perishable food product. Left exposed to heat, light, vibration or fluctuations in temperature and
humidity, all types of wine, including red, white, sparkling, and fortified, can spoil. When properly stored, wines not only maintain their quality but many actually improve in aroma, flavor, and complexity as they mature.
Conditions
Wine can be stored satisfactorily between 45 and 65 degrees Fahrenheit, provided any variations are very gradual. Temperature centered around 55 degrees Fahrenheit or 13 degrees Celsius, much like the cool
caves used to store wine in France, is ideal for both short-term storage and long-term aging for all types of wines. Note that wine generally matures differently and more slowly at the lower temperatures than it does at the higher temperatures.
Active versus passive
Residential wine cellars can be either active or passively cooled. Actively cooled wine cellars are highly
insulated and need to be properly constructed. These types of wine cellars utilize specific wine cellar
conditioning and cooling systems to maintain the desired temperature and humidity. Many systems only control the temperature and not the humidity so it is important to look for a system that actively controls both with temperature and humidification integrated into the unit. Passively cooled wine cellars take advantage of naturally cool and damp areas (such as basements with uninsulated outside walls in cool and temperate climates) when minor seasonal and diurnal temperature variations can be tolerated. Passive wine cellars may be less predictable, but cost nothing to operate and aren't affected by
power outages.
External links
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Wine storage and cellar conditions
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How to pick your wine refrigerator