Kino some sort of tannin
Fresh dates contain tannin, the same mouth puckery chemical found in dry red wine and persimmons. Freezing will reduce the tannin levels and also soften the fruit.
Cranberries contain tannin
Tannin solutions are acids responsible for the color and some flavor in tea.
Tannin
Tannin in coffee contains approximately 90,000 ppm. Tannin is also found in other products including red wines and apple cider.
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tannin
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Foods that contain tannin include red wine, apple juice, apple cider, pears and red-skinned apples. Some people are sensitive to tannin and it can trigger migraines.
Tannin is a boy's name. Other names similar to Tannin would be Tannon, Tannen, Tannan and Tynnin. Tannis and Tannie also sounds very cute as a baby name.
You probably mean Tannin. And there is normally no tannin in deep wells. Only in shallow wells.