Malic acid is closely related to citric acid vitamin c which is found naturally in a wide range of foods including green apples malic acid can be quite tart and bitter and has been used for many years as flavouring in a variety of different sweets providing a sharp and tangy taste malic acid is one of the main fruit acids and is produced naturally in a range of plants most notably in apples malic acid is naturally occurring in small quantities in a variety of foods for maximum benefits it