Measured process improvements explicitly mention the amount of quantitative change. Extract the measured process improvements explicitly found in the following text: There’s something special, nostalgic even, about the taste of a sour candy. It makes the mouth water, the lips pucker, and the eyes and face scrunch up. That tangy, tart flavor has been integral to winning recipes for candies, drinks, and more for generations. It turns out, that distinctive sourness comes from malic acid—a natural substance derived from many fruits. Since 1969, Bartek Ingredients has been a primary supplier of that renowned flavor to the makers of many of the world’s favorite candies.