Some of you may already know this — ingredients are listed in order of their quantity in a food product. (dwarfhamsterblog.com)
An ingredients list must also be visible, with ingredients (including water content) listed in descending order of quantity. (womenshealthandfitness.com.au)
Keep in mind, though, that ingredients are listed in order of quantity, so if any type of sugar is listed in the first few ingredients, the food is most likely high in added sugars. (marthastewart.com)