Confirmed whole-chicken-egg-cooked got a score of 52 and Lucky-Charms (American kids sugar cereal) got a 56; possible score is per food type, for example grain, protein, etc — but unclear.

Got the numbers from this document:

https://static-content.springer.com/esm/art%3A10.1038%2Fs430...

Sorry, but regardless of author’s intent, that makes no sense to me without explanation.