Wine making has been practiced in one way or another for many thousands of years with pottery jars found in Persia (modern day Iran) dating back to 5,500 BC showing evidence of grapes use in winemaking. In addition, jars from Jiahu in China dated to somewhere between 6000 and 7000 BC have also been discovered containing wine from wild grapes.
However whether we are considering ancient or modern wine making, a number of the same conditions apply and not dissimilar techniques are used because the chemistry of the humble grape is an eternal quality.
With a few exceptions the grapes used for making wine grow only only between latitudes 30-50 degrees North and 30-45 degrees South of the equator. Unlike many other crops, grapes do not need an especially fertile soil and it should be noted that a thinner soil usually produces a small crop but also usually produces grapes of a higher quality.
Oddly enough, soils which are rich in nitrogen and other nutrients (conditions which are generally highly beneficial for the majority of plants) can produce grapes which are not suitable for winemaking. These grapes are however often fine for eating, but lack the desired amounts of minerals, acids and sugars for winemaking.
Undoubtedly, the best wines are produced on soils which would be thought of as poor quality for other agricultural purposes. For example, the stellar wines from Bordeaux are made from grapes grown in gravelly soil, which overlies a base of clay or chalk. The crop here is small, but the quality of the grapes is high. In this case the pebbly earth permits good drainage, which is essential as grapevines require adequate but not excessive water, but the conditions force the roots to grow deep into the earth where they absorb a range of complex minerals.
Vineyards are also most often found along river valleys, with slopes that provide abundant sunshine. Vines in these cases are frequently of the European species vitis vinifera, from which many well known wines are made, such as Cabernet Sauvignon, Chardonnay, and Merlot.
Viticulture, the name applied to the practice of growing grapes for wine, is one of the most complex agricultural undertakings today. A master vintner (today, sometimes called an oenologist), has got to be an expert in a wide range of topics including soil chemistry, fermentation, climatology and several other ancient arts and modern sciences.
In addition to categorization by variety, wines are also classified by vinification methods (still, sparkling, ros?, fortified, blush), by region (Bordeaux, Burgundy, Alsace etc.), by vintage as well as by a dozen other methods.
Once the farmer, chemist and manufacturer have finished their work, the businessman then takes over and wine today is certainly very big business. Wine sales in the United States alone run to over 600 million gallons, representing in excess of $20 billion in consumer spending. Perhaps not surprisingly France is top of the pack when it comes to exports with 22% of world export volume, with Italy following close behind.
When all is said and done however, no matter how big a business wine producing is today, it is still very much a balance of art, science and business and winemaking is most certainly not a venture to be entered into by anybody of a timid disposition.
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