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Structure

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Wine Structure: What is Tannin in Wine?

Last Updated: August 21, 2021

Tannin is a characteristic found in red grape skins and seeds as well as oak. They cause an astringent or bitterness when either too much is extracted from grapes or when young. As a wine matures, either in a fermenting vessel such as oak or stainless steel, the tannins soften and meld into the wine....

Why Wine Contains Sulfites

Last Updated: August 5, 2021

Why do wines have added sulfites? What do Sulfites do, anyways? SO2, Sulfur Dioxide is a naturally occurring part of the winemaking process. It is a byproduct of making alcohol. However, it can also be added at a few different winemaking points to preserve the freshness of the grapes and wine. When Grapes Arrive into...