Question

Spinach does not taste sour but still said to be an acidic food substance.Why?

Answer 1

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●Acidic foods are believed to taste sour because of their hydrogen ion concentration....ツ

Answer 2

It is true that acidic substances taste sour. But the same answer is not applicable in every case, here spinach.

BTW not all sour tasting substances are also not acidic

It is said so as most acids taste sour