Malic acid is a component of many of the foods that we eat daily. Malic acid is a white powder derived from unripe fruit and it produces the characteristic sour flavour in green apples, rhubarb, cherries, and grapes. It can be blended with other food acids, sugars, flavourings, and seasonings to enhance flavour or to create unique flavour experiences. Malic Acid is what gives extreme sour candies their strong flavour and is the signature tartness in salt and vinegar chips.