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Sour taste is associated with acidic substances. When the taste buds on your tongue detect acids like citric acid in lemons or acetic acid in vinegar, they send signals to your brain that interpret the taste as sour.
A base tastes bitter while an acid tastes sour, not sweet.
Sour tasting foods are usually acidic. The sour taste in foods comes from acids such as citric acid, malic acid, or acetic acid that stimulate taste receptors on our tongue and trigger a sour sensation.
Vinegar is an acid. It contains acetic acid, which gives it a sour taste and acidic properties.
Acetic acid is responsible for the sour taste of vinegar.
Vinegar is an acid. It is primarily composed of acetic acid, which gives it its sour taste and acidic properties.