Rose

Pink wine that is made from red or purple grapes, but fermented for a shorter period of time with the skins present.  

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Racking

The process of syphoning wine from one vessel to another. The first racking transfers wine from the primary fermenter to the secondary fermenter (usually a carboy as far as home winemaking is concerned) after the primary fermentation is over. After that, racking may be done several more times before it is racked to aid in…

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Proof

Equal to twice the percentage of alcohol in a solution. For example, a solution with 15% alcohol is said to be “30 Proof.” The term originated in Britain when Rum was used to pay sailors. The rum would be “proofed” to prove it had not been watered down. Gunpowder would be immersed in the rum.…

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Primary Fermenter

In home wine making, generally a pail made out of food grade plastic and in a variety of sizes, depending on the amount of wine that is being made. Primary fermentation which generally takes 5 to 8 days is done in the pail, often with a lid that is not closed tightly. This allows for…

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Primary Fermentation

The first stages of the fermentation process when the fermentation is more energetic and vigorous. Generally occurs in the presence of air, and quickly converts sugars to carbon dioxide and alcohol. Wine is made with the juice of the fruit in a primary fermentation vessel – in home winemaking, usually a food grade plastic pail…

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pH

Describes relative acidity of a solution. In winemaking terms, knowing the pH can be helpful in determining some qualities of the wine as well as amounts of sulfite to add before bottling.  

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Pectic Enzyme

An enzyme that is added to wines that are high in pectin. Pectin is the substance that causes jelling and some fruits have high levels of pectin that are not wanted in wine.  

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Nose

The aroma or bouquet of a wine. The smell or odour that is released from the wine.

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Lees

A sediment composed of yeasts and other solids that form during the fermentation process. Racking usually removes most of this sediment.

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Mycoderma

In winemaking, a general term for a mix of different populations of yeast, mold and bacteria that cause “film yeast.” When present in wine, can cause an objectional flavor.  

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Must

A term that is used to describe wine during the process, when it still contains large particles of fruit, juice and yeast.

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