I cut out foods with the most additives first, but I didn't map out the whole plan ahead of time. Basically food with a long shelf life tended to have many non-food items under "Contents." I was already a vegetarian.

As I got used to less extra fat, sugar, salt, etc, I found fewer and fewer prepared things I wanted. My body more or less made the decisions from then on.

The only thing I still miss is really good home-made turkey gravy over seasoned bread stuffing and mashed potatoes ...

roads