Can something have more sugar per 100g than the percentage of sugar that's in it? If this is the wrong place to ask this, please direct me to the correct place.



I am a big fan of cereal, and I like to eat a fair amount, but don't like to have too much sugar. I recently started eating Shreddies, which claims to have only 13g of sugar per 100g.

However, (and this is where my question arises), on the box of cereal, as well as in the nutrition information, it states that 96% of Shreddies is whole grain wheat, and also on the box it says that 96.2g of whole grain goes into every 100g.

How can it be, that they say that 96% of the product is wheat, but also somehow that there is 13g of sugar in every 100g? Surely it shouldn't be possible for there to be more than maybe 6g of sugar?

Where does the other grams come from? I know whole grain wheat doesn't have that much natural sugar in it so I don't understand how they can say there is 96g of whole grain wheat for every 100g in Shreddies, but also somehow say that there's 13g of sugar in every 100g, which seems to be a contradiction.

Please could someone educate me on this, tyvm.
Looking up Shreddies, I found this site. It lists, in the ingredients 


  Whole Grain Wheat (96%), Sugar, Invert Sugar Syrup, Barley Malt Extract, Salt, Molasses, Vitamins and Minerals (Niacin, Iron, Pantothenic Acid, Folic Acid, Vitamin B6, Riboflavin)


There is no percentage for the sugar in the ingredients list. 

And the nutritional information says 


  Carbohydrate  70g 
  of which sugars   13g


If that's where your confusion comes from, then it is simply that you didn't realize the different meanings of the word "sugar". 

Chemically, sugars are a class of molecules with a roughly similar structure, most of which taste similar. For a cook or food technologist, "sugar" is any ingredient that constist of one or many of these molecules and can be used to sweeten food. And finally, in everyday language, "sugar" without any further qualifications is exactly one of these products, namely white crystal sugar, that consists of the molecule sucrose only. 

In the ingredients list, the second ingredient uses this third meaning of the word sugar - they have put less white table sugar than whole grain into the cereal (making the white sugar amount at most 4%). The nutrition label uses the first meaning - it sums together all chemical sugars in the cereal. And it is normal for even unprocessed whole grain to contain some of those - this being a cereal, and a malted one at that, it has more of them. So, part of your "whole grain" ingredient is made up of (chemically) sugars, as well as the "sugar" ingredient, the "invert sugar syrup" ingredient, possibly the "barley malt extract" (pure malt is quite a bit of sugar), and the "molasses" ingredient. Together, the weight of chemical sugars is 13% of the cereal.