27 CFR §7.28

1. (a)Prior to or in conjunction with the review of an application for a certificate of label approval (COLA) on TTB Form 5100.31, the appropriate TTB officer may require a bottler or importer to submit a formula, the results of laboratory testing of the malt beverage, or a sample of any malt beverage or ingredients used in producing a malt beverage. After the issuance of a COLA, or with regard to any malt beverage required to be covered by a COLA, the appropriate TTB officer may require a full and accurate statement of the contents of the container.
2. (b)A formula may be filed electronically by using Formulas Online, or it may be submitted on paper on TTB Form 5100.51. See § 7.11 for more information on forms and Formulas Online.