It's not meant to fill you up. It's meant to let them sell overly sugared cereal and pretend it's healthy. I'm bloody sure they know *no-one* is ever going to eat the recommended portion.This is what I mean about portion size recommendations on boxes.
Nestle recommend 30g-45g for an adult male. Looks a little light to me. How is that going to fill you up?
This is 45g
This is 30g
The exception is the big biscuits: Shredded Wheat and Weetabox. you don't see (full size) ones with sugar and nuts or chocolate chips. Cos that would blow the calories per serving out of the water.....