<;p>;The invention comprises a method of processing, in particular manufacturing and/or filling, a juice and/or soda product in a beverage processing plant, wherein the juice and/or soda product is obtained from one or several starting products, comprising the steps of determining the color and turbidity of at least one starting product of a juice and/or soda product, and/or the color and turbidity of the obtained juice and/or soda product by means of at least one sensor (6, 7, 8, 9) of the beverage processing plant, comparing the determined color and turbidity with a stored color and a stored turbidity of at least one starting product of a predetermined juice and/or soda product, and/or with a stored color and a stored turbidity of the predetermined juice and/or soda product, and operating the beverage processing plant based on the result of this comparison.<;/p>;