They have to state, plainly, in a conspicuous place on the front of the package that it is artificially flavored. It's the law. You probably just saw that label.
If a tweet (or similar) makes a statement of fact, either mark it as "satire" in the body or provide the original source link backing up the statement (see rule 6)
They have to state, plainly, in a conspicuous place on the front of the package that it is artificially flavored. It's the law. You probably just saw that label.