Definition
In legal contexts, "soft drinks" has been used in two overlapping senses:
1. Broadly: all non-intoxicating beverages — any drink that does not produce intoxication regardless of its alcohol content.
2. More precisely (and more commonly in regulatory and licensing law): beverages that contain a small percentage of alcohol but not enough to cause intoxication even when consumed in the largest practicable quantity. This narrower definition was operative in licensing statutes and local option laws where the critical legal question was not the presence of alcohol but the capacity of the beverage to intoxicate.
The legal definition is therefore not synonymous with "zero alcohol." A beverage could be classified as a soft drink under licensing law while still containing a measurable, if minimal, alcohol content.
Common Language
Modern common usage (Wiktionary): Plural of soft drink — a carbonated, non-alcoholic beverage.
Historical common usage (Webster's 1913): Not separately defined as a legal term; "soft" in the context of drinks connoted the absence of distilled spirits, as opposed to "hard" liquors.
The gap between common and legal meaning here is significant. Today, a consumer calling a beverage a "soft drink" almost certainly means it contains no alcohol whatsoever — a cola, a soda water, a fruit drink. The historical legal definition admitted trace alcohol content. A researcher reading a licensing statute or a local option ordinance from the late nineteenth or early twentieth century that permits the sale of "soft drinks" cannot assume the legislature meant zero-alcohol beverages. The operative question under that law was intoxicating capacity, not chemical composition.
Common Confusion
Soft drinks vs. intoxicating liquors: In licensing and prohibition-era law, the line between a regulated "intoxicating liquor" and a permissible "soft drink" was drawn at the practical capacity to intoxicate, not at any fixed alcohol percentage. A beverage with a fraction of a percent of alcohol could be a soft drink; the same beverage, if shown capable of producing intoxication in sufficient quantity, could cross the line. Courts were asked to make this determination factually, not by formula. Researchers should not assume any modern percentage-based standard (such as the 0.5% ABV threshold common in contemporary law) applies to historical sources using this term.
Why It Matters in Research
This term is primarily a historical research concern. It appears most frequently in:
— Local option and prohibition-era licensing statutes (late 19th through early 20th century), where municipalities authorized sale of "soft drinks" while prohibiting "intoxicating liquors." The definition determined what vendors could legally sell.
— Administrative and criminal proceedings against retailers accused of selling intoxicating beverages under cover of a soft drink license.
— State court decisions interpreting local option laws, where the factual question of intoxicating capacity was disputed.
The practical trap for researchers: a statute or ordinance permitting "soft drink parlors" or the sale of "soft drinks" was not a clean prohibition on alcohol sales. It was a prohibition on the sale of beverages with meaningful intoxicating capacity. Vendors sometimes exploited this by selling low-alcohol beverages; litigation followed over where the line fell. The Kentucky case cited in Bouvier's (142 Ky. 821) is an example of a court resolving that exact dispute.
Modern researchers working on alcohol regulation history, local option law, or prohibition-era enforcement should flag every instance of "soft drinks" in historical statutes and read it under the intoxication-capacity test, not under any assumption of zero alcohol content.
The term has essentially no continuing technical legal significance in contemporary law, where alcohol content is regulated by percentage thresholds defined in federal and state statutes. Modern food and beverage law uses "non-alcoholic beverage" or defines alcohol content by specific ABV thresholds. "Soft drinks" in a contemporary legal document is almost certainly used in its ordinary commercial sense with no technical legal content.
Historical Dictionary Support
Bouvier's Law Dictionary provides the only historical legal dictionary entry and it is concise but precise: soft drinks include all non-intoxicating beverages but are commonly understood as those containing a small percentage of alcohol insufficient to produce intoxication when drunk in the largest practicable quantity, citing 142 Ky. 821, 135 S.W. 290.
What Bouvier's entry does well: it captures the functional legal test (capacity to intoxicate) and acknowledges that the category is not limited to zero-alcohol beverages. What it does not address: the enormous variation in how different jurisdictions defined this threshold, the evidentiary questions courts faced in determining "largest practicable quantity," and the way the definition shifted as prohibition laws evolved. Researchers should treat Bouvier's entry as a starting point and expect significant jurisdictional divergence in primary sources.
Jurisdictional Note
The intoxication-capacity test for defining soft drinks versus intoxicating liquors varied by state. Some jurisdictions adopted percentage-based bright lines by statute; others left the question to juries on a case-by-case basis. Kentucky courts were among those resolving the definition through litigation. Researchers should not generalize from any single state's case law.