When Mr. Nutter was fighting the soda tax battle, he kept a bottle of Mountain Dew and a container with 17 teaspoons of sugar — the amount in the bottle — on the table in the center of his office. It was a good “conversation piece,” he said, about the surprising number of calories in a typical soda. I think this is key. Better information and transparency is having an effect. I'm glad to hear we're approaching a poin…
Thing is - most of products in US has label stating clearly amount of calories and major contributors. It is SUPER easy to find approximate amount to which you need to stick. But people still over do it two/three/more times.
As much as I hate it, I think only high food costs will work. Problem is - how to keep it high enough to prevent abuse, but at the same time, keep lower income people access to enough nutrients.