Baking powder and distilled vinegar shall show on the label the name of each ingredient from which made. Distilled vinegar shall be marked as such; and cider vinegar which, having been in excess of the standard of acidity, has been reduced to the standard, shall have that fact indicated on the label.
Iowa Code § 191.8
Baking powder and vinegar
[SS15, §4999-a31, -a31c; C24, 27, 31, 35, 39, §3070; C46, 50, §191.4; C54, 58, 62, 66, 71, 73, 75, 77, 79, 81, §191.8]
Official source: Iowa Legislature. Reproduced from public-domain Iowa statutes; confirm against the official source for the current text. Not legal advice.