Cereal beverage.
Cereal beverage. A beverage, produced either wholly or in part from malt (or a substitute for malt), and either fermented or unfermented, which contains, when ready for consumption, less than one-half of 1 percent of alcohol by volume.
Source
27 CFR § 25.11
Scoping language
When used in this part, where not otherwise distinctly expressed or manifestly incompatible with the intent thereof, terms have the meanings given in this section.