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Stages of the Wine Making Process Cheat Sheet by

5 Stages of the Wine Making Process
wine     process     stages     winemmaking

Introd­uction

Wine making has been around for thousands of years. It is not only an art but also a science. Wine making is a natural process that requires little human interv­ention, but each wine maker guides the process through different techni­ques. In general, there are five basic components of the wine making process: harves­ting, crushing and pressing, fermen­tation, clarif­ica­tion, and aging and bottling. Wine makers typically follow these five steps but add variations and deviations along the way to make their wine unique.

1. Harvesting

Harvesting is the first step in the wine making process and an important part of ensuring delicious wine. Grapes are the only fruit that have the necessary acids, esters, and tannins to consis­tently make natural and stable wine. Tannins are textural elements that make the wine dry and add bitterness and astrin­gency to the wine.

The moment the grapes are picked determines the acidity, sweetness, and flavor of the wine. Determ­ining when to harvest requires a touch of science along with old fashioned tasting. The acidity and sweetness of the grapes should be in perfect balance, but harvesting also heavily depends on the weather.

Harvesting can be done by hand or mechan­ically. Many wine makers prefer to harvest by hand because mechanical harvesting can be tough on the grapes and the vineyard. Once the grapes are taken to the winery, they are sorted into bunches, and rotten or under ripe grapes are removed.

2. Crushing and Pressing

After the grapes are sorted, they are ready to be de-stemmed and crushed. For many years, men and women did this manually by stomping the grapes with their feet. Nowadays, most wine makers perform this mechan­ically. Mechanical presses stomp or trod the grapes into what is called must. Must is simply freshly pressed grape juice that contains the skins, seeds, and solids. Mechanical pressing has brought tremendous sanitary gain as well as increased the longevity and quality of the wine.

For white wine, the wine maker will quickly crush and press the grapes in order to separate the juice from the skins, seeds, and solids. This is to prevent unwanted color and tannins from leaching into the wine. Red wine, on the other hand, is left in contact with the skins to acquire flavor, color, and additional tannins.
 

Wine Making Steps

3. Fermen­tation

After crushing and pressing, fermen­tation comes into play. Must (or juice) can begin fermenting naturally within 6-12 hours when aided with wild yeasts in the air. However, many wine makers intervene and add a commercial cultured yeast to ensure consis­tency and predict the end result.

Fermen­tation continues until all of the sugar is converted into alcohol and dry wine is produced. To create a sweet wine, wine makers will sometimes stop the process before all of the sugar is converted. Fermen­tation can take anywhere from 10 days to one month or more.

4. Clarif­ication

Once fermen­tation is complete, clarif­ication begins. Clarif­ication is the process in which solids such as dead yeast cells, tannins, and proteins are removed. Wine is transf­erred or “racked” into a different vessel such as an oak barrel or a stainless steel tank. Wine can then be clarified through fining or filtra­tion.

Fining occurs when substances are added to the wine to clarify it. For example, a wine maker might add a substance such as clay that the unwanted particles will adhere to. This will force them to the bottom of the tank. Filtration occurs by using a filter to capture the larger particles in the wine. The clarified wine is then racked into another vessel and prepared for bottling or future aging.

5. Aging and Bottling

Aging and bottling is the final stage of the wine making process. A wine maker has two options: bottle the wine right away or give the wine additional aging. Further aging can be done in the bottles, stainless steel tanks, or oak barrels. Aging the wine in oak barrels will produce a smoother, rounder, and more vanilla flavored wine. It also increases wine’s exposure to oxygen while it ages, which decreases tannin and helps the wine reach its optimal fruiti­ness. Steel tanks are commonly used for zesty white wines.

After aging, wines are bottled with either a cork or a screw cap, depending on the wine maker’s prefer­ence.

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