Guide
Does non-alcoholic wine contain alcohol?
Usually a trace. 0.0% and under 0.5% are different claims, and neither one is a chemical absolute.
Yes, unless a cited source says otherwise. In the United States, non-alcoholic usually means at or below 0.5% alcohol by volume. That is a ceiling. It is not a promise that the glass contains no ethanol.
What 0.0% is claiming
0.0% is a stated residual, or a rounding the producer treats as zero. It is not proof that every laboratory, at every sensitivity, would find nothing. When a source states 0.0%, we print 0.0%. When the producer only says non-alcoholic, we do not upgrade that sentence into a zero.
What under 0.5% is claiming
Under 0.5% is the band we use when the cited figure is a trace under that line, or when the source gives the ceiling rather than an exact residual. A 0.4% Riesling and a 0.0% Riesling are different facts. The longer split is 0.0% vs under 0.5%.
Removal does not finish at a laboratory zero
Dealcoholized wine was wine. A machine then took ethanol out. Some houses publish 0.0% after that step. Some publish under 0.5%. If the source is silent, the review prints Undeclared. Silence is not a zero.
A built wine — tea, fruit, botanicals, never fermented as wine — can also carry a trace, or none. That is a different object. See What is a built wine?