That allows comparing relative sweetness of drinks, but runs the risk of consumers, seeing “1g per 100ml”, will say “there’s only 1g of sugar in this drink” and then gulp down a bottle of the stuff.
If the typical consumer drinks the stuff in bottle sizes, maybe the dietary information on the bottle should use ‘per bottle’.
That's the kind of idiotic logic that leads to a 600ml bottle or a 60g bag of chips being '2 servings'.
The relevant question is 'how sugary is this substance'. With a secindary question of 'how sweet is it' to set expectations for people who want somet=ing sweet or peoplewho don't. Give people the basic level of respect to decide how much they have after that.
If the typical consumer drinks the stuff in bottle sizes, maybe the dietary information on the bottle should use ‘per bottle’.