Mar
6
What is wine?
Wine has been produced for centuries from just two simple ingredients: yeast and grape juice. Actually, just about any fruit juice can be used, but by far the majority of all wine is made from the juice of the grape.
We tend to think of wine as a special treat, a gracious gift (as in a wine and cheese 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.
The wine is removed from the original container and placed into another container in order to mature before bottling. The yeast stays in the original container.
There are black grapes and green grapes and grapes of various gradations in between. Regardless of the color of the grape the juice is always clear, or nearly so. If the skins are left in the juice during fermentation, a red wine is the result. A white wine results when the skins are removed.
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.
It is because of all of these variables that a wine drinker can always notice a flavor difference from one wine to the next. This can make for an interesting hobby of never-ending discovery.
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.
Because of the brevity of this description, this has been only a tiny overview of what there is to know about wine. Hopefully, though, it has given you a few nuggets for your conversation at the next wine and cheese tasting that you attend.
