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From the Juice of Grapes to Wine
For millennia, wine has been made from only two incredients. They are grape juice and yeast. Any fruit juice can be used, as a matter of fact, but grape juice is the most popular.
We tend to think of wine as a special treat, a gracious gift (as in a wine gift basket), a beverage of celebration or a drink to serve with a special meal. For much of history, though, it was a drink of necessity due to the often poor standards of the available water.
Yeast is the magical ingredient that turns grape juice into wine. Interestingly enough, there is actually wild yeast spores in the air and all that is really needed to make wine is an open container of grape juice and time. The result however, would probably not be the most palatable of beverages.
There are numerous strains of yeasts and the types used to make wine have been cultured just for this purpose. The strain of the yeast has an impact upon the wine’s eventual flavor. Well anyway, yeast is a living organism that feeds off of sugars in the grape juice in a process called fermentation. It is the fermentation that causes the sugars in the grape juice to turn into alcohol.
Once all of the fermentable sugars have been consumed, the yeast will fall to the bottom of the container. The wine is removed from the container, leaving the yeast, and is trasferred to another container to mature while waiting to be bottled.
How does wine get its color?
You probably know that there are green grapes and black grapes and different grapes are used to make different wines. The color of the wine, however, does not directly reflect the color of the grape. In fact, grape juice is largely clear no matter the color of the original grape. The color of wine is determined by whether (and for how long) the skin is allowed to remain in the juice during the fermentation process.
What gives each wine its taste?
Even though there are very few ingredients, there are many things which influence the taste of wine. First of all, there are many varieties of grapes. Each grape variety will produce different flavors, aromas, and even textures. In addition, the soil and climate where the grapes are grown drastically affect these variables. Not only that, but the wine maker can control various things by the technique, temperature and yeast used during fermentation. Other variables such as fermenting or storing in oak barrels will also affect the taste.
Never fear, with all of these factors considered even the most avid wine drinker would ever be able to experience all of the different varieties of wine on the market today. Let the treasure hunting begin!
Tannin is a substance in wine that causes a firm, mouth-drying feeling in your mouth. It is extracted from the skins, seeds and stems of the grapes so red wines will contain more tannin than whites. White wines will get a degree of tannin when oak barrels are used for fermentation or aging. Eat just the skins of grapes or drink strongly brewed, unsweetened tea for a good idea of what tannin feels like in your mouth.
Clearly, this has been a quick overview of wine, but hopefully it has filled some of the voids in your understanding of this historic drink.