Teinturier grape

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A demonstration of the difference between a red fleshed teinturier grape (Agria shown on the left) and a red wine grape variety (Grenache on the right) with its skin removed to show that both flesh and juice are naturally white. The vast majority of red wine grapes, like the Grenache, express white juice, with the red color of red wines coming from the grape's skin as part of the winemaking process.

Teinturier grapes are

fermentation process. The name teinturier comes from French, meaning "dyer".[2]

Wines

Teinturier varieties, while containing a lot of color, usually make special wines, perhaps due to a higher level of

tannins, compounds structurally related to the anthocyanins. Many winemakers blend small volumes of teinturier juices into their wines, to boost the colour, without dramatically impacting the taste. In addition, with the increased frequency of forest fires and the resulting risk of smoke taint in winemaking, tenteurier grapes are useful in making red wines even when the juice is pressed immediately without the skins. So a wine made in the rosé
style from tenteurier grapes will be red rather than rosé and smoke-free (because smoke taint is present in the skins, not the pulp), no matter how smoky the area is.

Examples

Grapes of the teinturier variety Kolor

References

2. Modern Grapes for the Pacific Northwest, by Kenton Erwin