What foods contain tanic acid?

Tannic acid is not a specific compound, but rather a general term for a group of polyphenols found in plants. These polyphenols have astringent properties and can be found in a variety of foods, including:

Fruits:

* Berries: Blueberries, cranberries, raspberries, strawberries

* Grapes: Especially red and dark grapes, as well as their skins and seeds

* Pomegranates

Vegetables:

* Nuts: Walnuts, almonds, pecans

* Legumes: Lentils, chickpeas

* Tea: Black, green, oolong

* Coffee

Other sources:

* Wine: Red wine, especially those made with tannin-rich grapes

* Chocolate: Dark chocolate contains high levels of tannins

* Bark: Oak bark is a traditional source of tannic acid

* Certain herbs and spices: cloves, cinnamon, oregano

It's important to note that:

* The amount of tannic acid in foods can vary depending on the variety, growing conditions, and processing methods.

* High levels of tannic acid can interfere with the absorption of iron.

* Tannins can also have a drying effect on the mouth, which is why they are often used in mouthwashes and astringents.

If you have any concerns about the consumption of tannic acid, it's always best to consult with a medical professional.