It is an open-ended scale that is based on a comparison of the beneficial components of a food to its harmful components. The higher the rating, the more nutritious the food. Dannon Fruit Yogurt contains the equivalent of six teaspoons of sugar in each cup.
Croissants are extremely high in fat.
Quiche is equally bad. More than half the calories in the crust come from fat. Gourmet TV dinners are junkier than others. All of them are too high in salt. The difference lies in their fat content.