Determining kashrus based on ingredients

Kashrut
1

Shalom!
I was wondering if you could please clarify why relying on ingredient lists are ok? Sometimes the generic term flavors can be used as explained by the FDA here? https://www.fda.gov/food/food-ingredients-packaging/overview-food-ingredients-additives-colors

Thanks!

2

There’s a combination of being familiar with Halacha and FDA regulation and policies that allows reading ingredient panels. If you have a specific question feel free to post.